21000002212022 has 16 divisors (see below), whose sum is σ = 33357069393120. Its totient is φ = 9881131847808.

The previous prime is 21000002212003. The next prime is 21000002212031. The reversal of 21000002212022 is 22021220000012.

It is a junction number, because it is equal to n+sod(n) for n = 21000002211988 and 21000002212006.

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, 37912697 + ... + 38462612.

It is an arithmetic number, because the mean of its divisors is an integer number (2084816837070).

Almost surely, 2^{21000002212022} is an apocalyptic number.

21000002212022 is a deficient number, since it is larger than the sum of its proper divisors (12357067181098).

21000002212022 is a wasteful number, since it uses less digits than its factorization.

21000002212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76383415.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21000002212022 its reverse (22021220000012), we get a palindrome (43021222212034).

The spelling of 21000002212022 in words is "twenty-one trillion, two million, two hundred twelve thousand, twenty-two".