20210000022 has 12 divisors (see below), whose sum is σ = 43788333420. Its totient is φ = 6736666668.

The previous prime is 20209999991. The next prime is 20210000023. The reversal of 20210000022 is 22000001202.

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 = 20209999959 and 20210000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210000023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561388872 + ... + 561388907.

It is an arithmetic number, because the mean of its divisors is an integer number (3649027785).

Almost surely, 2^20210000022 is an apocalyptic number.

20210000022 is an abundant number, since it is smaller than the sum of its proper divisors (23578333398).

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

20210000022 is a wasteful number, since it uses less digits than its factorization.

20210000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122777787 (or 1122777784 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20210000022 its reverse (22000001202), we get a palindrome (42210001224).

The spelling of 20210000022 in words is "twenty billion, two hundred ten million, twenty-two", and thus it is an aban number.