1210121232 has 80 divisors (see below), whose sum is σ = 3215627520. Its totient is φ = 391910400.

The previous prime is 1210121221. The next prime is 1210121317. The reversal of 1210121232 is 2321210121.

1210121232 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×1210121232² = 2928786792274395648, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532194 + ... + 534462.

It is an arithmetic number, because the mean of its divisors is an integer number (40195344).

Almost surely, 2^1210121232 is an apocalyptic number.

1210121232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210121232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607813760).

1210121232 is an abundant number, since it is smaller than the sum of its proper divisors (2005506288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210121232 is a wasteful number, since it uses less digits than its factorization.

1210121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592 (or 2586 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1210121232 is about 34786.7968056848. The cubic root of 1210121232 is about 1065.6378237573.

Adding to 1210121232 its reverse (2321210121), we get a palindrome (3531331353).

Subtracting 1210121232 from its reverse (2321210121), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 12101 and 21232, that added together give a palindrome (33333).

The spelling of 1210121232 in words is "one billion, two hundred ten million, one hundred twenty-one thousand, two hundred thirty-two".