20011212232 has 16 divisors (see below), whose sum is σ = 40932025200. Its totient is φ = 9096005520.

The previous prime is 20011212197. The next prime is 20011212241. The reversal of 20011212232 is 23221211002.

It is a happy number.

It is a super-2 number, since 2×20011212232² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113699982 + ... + 113700157.

It is an arithmetic number, because the mean of its divisors is an integer number (2558251575).

Almost surely, 2^20011212232 is an apocalyptic number.

20011212232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20011212232 is an abundant number, since it is smaller than the sum of its proper divisors (20920812968).

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

20011212232 is a wasteful number, since it uses less digits than its factorization.

20011212232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227400156 (or 227400152 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20011212232 its reverse (23221211002), we get a palindrome (43232423234).

The spelling of 20011212232 in words is "twenty billion, eleven million, two hundred twelve thousand, two hundred thirty-two".