21202002022 has 32 divisors (see below), whose sum is σ = 34233840000. Its totient is φ = 9828594048.

The previous prime is 21202002011. The next prime is 21202002049. The reversal of 21202002022 is 22020020212.

It is a junction number, because it is equal to n+sod(n) for n = 21202001993 and 21202002011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71104 + ... + 217852.

It is an arithmetic number, because the mean of its divisors is an integer number (1069807500).

Almost surely, 2^21202002022 is an apocalyptic number.

21202002022 is a deficient number, since it is larger than the sum of its proper divisors (13031837978).

21202002022 is a wasteful number, since it uses less digits than its factorization.

21202002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146880.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 21202002022 its reverse (22020020212), we get a palindrome (43222022234).

The spelling of 21202002022 in words is "twenty-one billion, two hundred two million, two thousand, twenty-two".