21002000002022 has 16 divisors (see below), whose sum is σ = 33931777294800. Its totient is φ = 9691668027552.

The previous prime is 21002000002007. The next prime is 21002000002037. The reversal of 21002000002022 is 22020000020012.

It is an interprime number because it is at equal distance from previous prime (21002000002007) and next prime (21002000002037).

It is a junction number, because it is equal to n+sod(n) for n = 21002000001994 and 21002000002012.

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, 64949897 + ... + 65272452.

It is an arithmetic number, because the mean of its divisors is an integer number (2120736080925).

Almost surely, 2^{21002000002022} is an apocalyptic number.

21002000002022 is a deficient number, since it is larger than the sum of its proper divisors (12929777292778).

21002000002022 is a wasteful number, since it uses less digits than its factorization.

21002000002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130228567.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 21002000002022 its reverse (22020000020012), we get a palindrome (43022000022034).

The spelling of 21002000002022 in words is "twenty-one trillion, two billion, two thousand, twenty-two".