20011121022 has 32 divisors (see below), whose sum is σ = 42511947552. Its totient is φ = 6257931264.

The previous prime is 20011121017. The next prime is 20011121057. The reversal of 20011121022 is 22012111002.

It is a junction number, because it is equal to n+sod(n) for n = 20011120989 and 20011121007.

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, 281473 + ... + 345324.

It is an arithmetic number, because the mean of its divisors is an integer number (1328498361).

Almost surely, 2^20011121022 is an apocalyptic number.

20011121022 is an abundant number, since it is smaller than the sum of its proper divisors (22500826530).

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

20011121022 is a wasteful number, since it uses less digits than its factorization.

20011121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627132.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20011121022 its reverse (22012111002), we get a palindrome (42023232024).

It can be divided in two parts, 20011 and 121022, that multiplied together give a palindrome (2421771242).

The spelling of 20011121022 in words is "twenty billion, eleven million, one hundred twenty-one thousand, twenty-two".