1232101220 has 48 divisors (see below), whose sum is σ = 2962431360. Its totient is φ = 421665024.

The previous prime is 1232101217. The next prime is 1232101223. The reversal of 1232101220 is 221012321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1232101217) and next prime (1232101223).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1232101195 and 1232101204.

It is not an unprimeable number, because it can be changed into a prime (1232101223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71927 + ... + 87393.

It is an arithmetic number, because the mean of its divisors is an integer number (61717320).

Almost surely, 2^1232101220 is an apocalyptic number.

1232101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232101220 is an abundant number, since it is smaller than the sum of its proper divisors (1730330140).

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

1232101220 is a wasteful number, since it uses less digits than its factorization.

1232101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16052 (or 16050 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1232101220 is about 35101.2994061473. The cubic root of 1232101220 is about 1072.0510401647.

Adding to 1232101220 its reverse (221012321), we get a palindrome (1453113541).

It can be divided in two parts, 1232101 and 220, that added together give a palindrome (1232321).

The spelling of 1232101220 in words is "one billion, two hundred thirty-two million, one hundred one thousand, two hundred twenty".