21020002111022 has 16 divisors (see below), whose sum is σ = 31709756993280. Its totient is φ = 10450243537272.

The previous prime is 21020002110959. The next prime is 21020002111033. The reversal of 21020002111022 is 22011120002012.

It is a junction number, because it is equal to n+sod(n) for n = 21020002110988 and 21020002111006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39843572 + ... + 40367687.

It is an arithmetic number, because the mean of its divisors is an integer number (1981859812080).

Almost surely, 2^{21020002111022} is an apocalyptic number.

21020002111022 is a deficient number, since it is larger than the sum of its proper divisors (10689754882258).

21020002111022 is a wasteful number, since it uses less digits than its factorization.

21020002111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80212007.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21020002111022 its reverse (22011120002012), we get a palindrome (43031122113034).

The spelling of 21020002111022 in words is "twenty-one trillion, twenty billion, two million, one hundred eleven thousand, twenty-two".