21020000001022 has 64 divisors (see below), whose sum is σ = 36112832225280. Its totient is φ = 9088329650400.

The previous prime is 21020000000971. The next prime is 21020000001031. The reversal of 21020000001022 is 22010000002012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318128833 + ... + 318194899.

It is an arithmetic number, because the mean of its divisors is an integer number (564263003520).

Almost surely, 2^{21020000001022} is an apocalyptic number.

21020000001022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21020000001022 is a deficient number, since it is larger than the sum of its proper divisors (15092832224258).

21020000001022 is a wasteful number, since it uses less digits than its factorization.

21020000001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74077.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21020000001022 its reverse (22010000002012), we get a palindrome (43030000003034).

The spelling of 21020000001022 in words is "twenty-one trillion, twenty billion, one thousand, twenty-two".