20400111041022 has 32 divisors (see below), whose sum is σ = 45842946170400. Its totient is φ = 6723632101824.

The previous prime is 20400111041017. The next prime is 20400111041077. The reversal of 20400111041022 is 22014011100402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20400111040986 and 20400111041004.

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, 2122353813 + ... + 2122363424.

It is an arithmetic number, because the mean of its divisors is an integer number (1432592067825).

Almost surely, 2^{20400111041022} is an apocalyptic number.

20400111041022 is an abundant number, since it is smaller than the sum of its proper divisors (25442835129378).

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

20400111041022 is a wasteful number, since it uses less digits than its factorization.

20400111041022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244717337 (or 4244717331 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20400111041022 its reverse (22014011100402), we get a palindrome (42414122141424).

The spelling of 20400111041022 in words is "twenty trillion, four hundred billion, one hundred eleven million, forty-one thousand, twenty-two".