21011202022 has 48 divisors (see below), whose sum is σ = 34645277520. Its totient is φ = 9524736000.

The previous prime is 21011202019. The next prime is 21011202067. The reversal of 21011202022 is 22020211012.

It is a happy number.

It is a super-2 number, since 2×21011202022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21011201993 and 21011202011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4374022 + ... + 4378822.

It is an arithmetic number, because the mean of its divisors is an integer number (721776615).

Almost surely, 2^21011202022 is an apocalyptic number.

21011202022 is a deficient number, since it is larger than the sum of its proper divisors (13634075498).

21011202022 is a wasteful number, since it uses less digits than its factorization.

21011202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4969 (or 4916 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21011202022 its reverse (22020211012), we get a palindrome (43031413034).

The spelling of 21011202022 in words is "twenty-one billion, eleven million, two hundred two thousand, twenty-two".