21212011010202 has 32 divisors (see below), whose sum is σ = 43233507922752. Its totient is φ = 6935811777024.

The previous prime is 21212011010161. The next prime is 21212011010213. The reversal of 21212011010202 is 20201011021212.

It is a super-2 number, since 2×21212011010202² (a number of 27 digits) contains 22 as substring.

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, 5444983 + ... + 8489514.

It is an arithmetic number, because the mean of its divisors is an integer number (1351047122586).

Almost surely, 2^{21212011010202} is an apocalyptic number.

21212011010202 is an abundant number, since it is smaller than the sum of its proper divisors (22021496912550).

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

21212011010202 is a wasteful number, since it uses less digits than its factorization.

21212011010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13939342.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21212011010202 its reverse (20201011021212), we get a palindrome (41413022031414).

The spelling of 21212011010202 in words is "twenty-one trillion, two hundred twelve billion, eleven million, ten thousand, two hundred two".