22111011020 has 48 divisors (see below), whose sum is σ = 54778257408. Its totient is φ = 7336370880.

The previous prime is 22111011007. The next prime is 22111011031. The reversal of 22111011020 is 2011011122.

It is a super-2 number, since 2×22111011020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22111010992 and 22111011010.

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, 2543012 + ... + 2551691.

It is an arithmetic number, because the mean of its divisors is an integer number (1141213696).

Almost surely, 2^22111011020 is an apocalyptic number.

22111011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111011020 is an abundant number, since it is smaller than the sum of its proper divisors (32667246388).

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

22111011020 is a wasteful number, since it uses less digits than its factorization.

22111011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094750 (or 5094748 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111011020 its reverse (2011011122), we get a palindrome (24122022142).

The spelling of 22111011020 in words is "twenty-two billion, one hundred eleven million, eleven thousand, twenty".