21010012202 has 16 divisors (see below), whose sum is σ = 32319229824. Its totient is φ = 10237500000.

The previous prime is 21010012201. The next prime is 21010012271. The reversal of 21010012202 is 20221001012.

It is a happy number.

It is a super-2 number, since 2×21010012202² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21010012201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65924 + ... + 215327.

It is an arithmetic number, because the mean of its divisors is an integer number (2019951864).

Almost surely, 2^21010012202 is an apocalyptic number.

21010012202 is a deficient number, since it is larger than the sum of its proper divisors (11309217622).

21010012202 is a wasteful number, since it uses less digits than its factorization.

21010012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282205.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21010012202 its reverse (20221001012), we get a palindrome (41231013214).

The spelling of 21010012202 in words is "twenty-one billion, ten million, twelve thousand, two hundred two".