20011122310020 has 48 divisors (see below), whose sum is σ = 56035308446208. Its totient is φ = 5335902522880.

The previous prime is 20011122310013. The next prime is 20011122310037. The reversal of 20011122310020 is 2001322111002.

It is a super-2 number, since 2×20011122310020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 11584596 + ... + 13199435.

It is an arithmetic number, because the mean of its divisors is an integer number (1167402259296).

Almost surely, 2^{20011122310020} is an apocalyptic number.

20011122310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011122310020 is an abundant number, since it is smaller than the sum of its proper divisors (36024186136188).

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

20011122310020 is a wasteful number, since it uses less digits than its factorization.

20011122310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24797500 (or 24797498 counting only the distinct ones).

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

Adding to 20011122310020 its reverse (2001322111002), we get a palindrome (22012444421022).

The spelling of 20011122310020 in words is "twenty trillion, eleven billion, one hundred twenty-two million, three hundred ten thousand, twenty".