202120111212 has 48 divisors (see below), whose sum is σ = 482222395872. Its totient is φ = 65866877440.

The previous prime is 202120111201. The next prime is 202120111273. The reversal of 202120111212 is 212111021202.

It is a junction number, because it is equal to n+sod(n) for n = 202120111191 and 202120111200.

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, 386763 + ... + 744194.

It is an arithmetic number, because the mean of its divisors is an integer number (10046299914).

Almost surely, 2^202120111212 is an apocalyptic number.

It is an amenable number.

202120111212 is an abundant number, since it is smaller than the sum of its proper divisors (280102284660).

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

202120111212 is a wasteful number, since it uses less digits than its factorization.

202120111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131298 (or 1131296 counting only the distinct ones).

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

Adding to 202120111212 its reverse (212111021202), we get a palindrome (414231132414).

The spelling of 202120111212 in words is "two hundred two billion, one hundred twenty million, one hundred eleven thousand, two hundred twelve".