21002022002022 has 16 divisors (see below), whose sum is σ = 42019664729520. Its totient is φ = 6998070546432.

The previous prime is 21002022002011. The next prime is 21002022002053. The reversal of 21002022002022 is 22020022020012.

It is a junction number, because it is equal to n+sod(n) for n = 21002022001992 and 21002022002010.

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, 650846083 + ... + 650878350.

It is an arithmetic number, because the mean of its divisors is an integer number (2626229045595).

Almost surely, 2^{21002022002022} is an apocalyptic number.

21002022002022 is an abundant number, since it is smaller than the sum of its proper divisors (21017642727498).

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

21002022002022 is a wasteful number, since it uses less digits than its factorization.

21002022002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301727127.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 21002022002022 its reverse (22020022020012), we get a palindrome (43022044022034).

The spelling of 21002022002022 in words is "twenty-one trillion, two billion, twenty-two million, two thousand, twenty-two".