202101211212 has 12 divisors (see below), whose sum is σ = 471569492856. Its totient is φ = 67367070400.

The previous prime is 202101211159. The next prime is 202101211307. The reversal of 202101211212 is 212112101202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 202101211191 and 202101211200.

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 3 ways as a sum of consecutive naturals, for example, 8420883789 + ... + 8420883812.

It is an arithmetic number, because the mean of its divisors is an integer number (39297457738).

Almost surely, 2^202101211212 is an apocalyptic number.

It is an amenable number.

202101211212 is an abundant number, since it is smaller than the sum of its proper divisors (269468281644).

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

202101211212 is a wasteful number, since it uses less digits than its factorization.

202101211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16841767608 (or 16841767606 counting only the distinct ones).

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

Adding to 202101211212 its reverse (212112101202), we get a palindrome (414213312414).

The spelling of 202101211212 in words is "two hundred two billion, one hundred one million, two hundred eleven thousand, two hundred twelve".