202102211212 has 24 divisors (see below), whose sum is σ = 385845929280. Its totient is φ = 91861204560.

The previous prime is 202102211167. The next prime is 202102211261. The reversal of 202102211212 is 212112201202.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387339 + ... + 1526077.

It is an arithmetic number, because the mean of its divisors is an integer number (16076913720).

Almost surely, 2^202102211212 is an apocalyptic number.

202102211212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

202102211212 is a deficient number, since it is larger than the sum of its proper divisors (183743718068).

202102211212 is a wasteful number, since it uses less digits than its factorization.

202102211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171861 (or 171859 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202102211212 its reverse (212112201202), we get a palindrome (414214412414).

It can be divided in two parts, 202102 and 211212, that added together give a palindrome (413314).

The spelling of 202102211212 in words is "two hundred two billion, one hundred two million, two hundred eleven thousand, two hundred twelve".