21022021202 has 96 divisors (see below), whose sum is σ = 40269791232. Its totient is φ = 8054085312.

The previous prime is 21022021199. The next prime is 21022021219. The reversal of 21022021202 is 20212022012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12919913 + ... + 12921539.

It is an arithmetic number, because the mean of its divisors is an integer number (419476992).

Almost surely, 2^21022021202 is an apocalyptic number.

21022021202 is a deficient number, since it is larger than the sum of its proper divisors (19247770030).

21022021202 is a wasteful number, since it uses less digits than its factorization.

21022021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832 (or 1819 counting only the distinct ones).

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

Adding to 21022021202 its reverse (20212022012), we get a palindrome (41234043214).

The spelling of 21022021202 in words is "twenty-one billion, twenty-two million, twenty-one thousand, two hundred two".