20011020122122 has 32 divisors (see below), whose sum is σ = 30376798044480. Its totient is φ = 9885919891200.

The previous prime is 20011020122063. The next prime is 20011020122131. The reversal of 20011020122122 is 22122102011002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20011020122096 and 20011020122105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949864633 + ... + 949885699.

It is an arithmetic number, because the mean of its divisors is an integer number (949274938890).

Almost surely, 2^{20011020122122} is an apocalyptic number.

20011020122122 is a deficient number, since it is larger than the sum of its proper divisors (10365777922358).

20011020122122 is a wasteful number, since it uses less digits than its factorization.

20011020122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32646.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20011020122122 its reverse (22122102011002), we get a palindrome (42133122133124).

The spelling of 20011020122122 in words is "twenty trillion, eleven billion, twenty million, one hundred twenty-two thousand, one hundred twenty-two".