20111021200032 has 96 divisors (see below), whose sum is σ = 61096773427200. Its totient is φ = 5673271788288.

The previous prime is 20111021200031. The next prime is 20111021200033. The reversal of 20111021200032 is 23000212011102.

It is an interprime number because it is at equal distance from previous prime (20111021200031) and next prime (20111021200033).

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 20111021199984 and 20111021200020.

It is not an unprimeable number, because it can be changed into a prime (20111021200031) 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, 189359032 + ... + 189465207.

It is an arithmetic number, because the mean of its divisors is an integer number (636424723200).

Almost surely, 2^{20111021200032} is an apocalyptic number.

It is an amenable number.

20111021200032 is an abundant number, since it is smaller than the sum of its proper divisors (40985752227168).

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

20111021200032 is a wasteful number, since it uses less digits than its factorization.

20111021200032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378824338 (or 378824330 counting only the distinct ones).

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

Adding to 20111021200032 its reverse (23000212011102), we get a palindrome (43111233211134).

The spelling of 20111021200032 in words is "twenty trillion, one hundred eleven billion, twenty-one million, two hundred thousand, thirty-two".