1232121012 has 48 divisors (see below), whose sum is σ = 2956257024. Its totient is φ = 399168000.

The previous prime is 1232120977. The next prime is 1232121047. The reversal of 1232121012 is 2101212321.

1232121012 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (1232120977) and next prime (1232121047).

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

It is a junction number, because it is equal to n+sod(n) for n = 1232120982 and 1232121000.

It is a congruent number.

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, 128712 + ... + 137952.

It is an arithmetic number, because the mean of its divisors is an integer number (61588688).

Almost surely, 2^1232121012 is an apocalyptic number.

1232121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1232121012 is an abundant number, since it is smaller than the sum of its proper divisors (1724136012).

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

1232121012 is a wasteful number, since it uses less digits than its factorization.

1232121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560 (or 9558 counting only the distinct ones).

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

The square root of 1232121012 is about 35101.5813319001. The cubic root of 1232121012 is about 1072.0567804725.

Adding to 1232121012 its reverse (2101212321), we get a palindrome (3333333333).

It can be divided in two parts, 12321 and 21012, that multiplied together give a palindrome (258888852).

The spelling of 1232121012 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, twelve".