20101001022 has 24 divisors (see below), whose sum is σ = 43554948840. Its totient is φ = 6699906000.

The previous prime is 20101001017. The next prime is 20101001033. The reversal of 20101001022 is 22010010102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20101000995 and 20101001013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394504 + ... + 442532.

It is an arithmetic number, because the mean of its divisors is an integer number (1814789535).

Almost surely, 2^20101001022 is an apocalyptic number.

20101001022 is an abundant number, since it is smaller than the sum of its proper divisors (23453947818).

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

20101001022 is a wasteful number, since it uses less digits than its factorization.

20101001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71288 (or 71285 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20101001022 its reverse (22010010102), we get a palindrome (42111011124).

The spelling of 20101001022 in words is "twenty billion, one hundred one million, one thousand, twenty-two".