20011021000122 has 16 divisors (see below), whose sum is σ = 40098859745472. Its totient is φ = 6657537375840.

The previous prime is 20011021000097. The next prime is 20011021000141. The reversal of 20011021000122 is 22100012011002.

It is a super-2 number, since 2×20011021000122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011021000098 and 20011021000107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3200735998 + ... + 3200742249.

It is an arithmetic number, because the mean of its divisors is an integer number (2506178734092).

Almost surely, 2^{20011021000122} is an apocalyptic number.

20011021000122 is an abundant number, since it is smaller than the sum of its proper divisors (20087838745350).

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

20011021000122 is a wasteful number, since it uses less digits than its factorization.

20011021000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401478773.

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

Adding to 20011021000122 its reverse (22100012011002), we get a palindrome (42111033011124).

The spelling of 20011021000122 in words is "twenty trillion, eleven billion, twenty-one million, one hundred twenty-two", and thus it is an aban number.