202120112212 has 6 divisors (see below), whose sum is σ = 353710196378. Its totient is φ = 101060056104.

The previous prime is 202120112147. The next prime is 202120112213. The reversal of 202120112212 is 212211021202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 196458151696 + 5661960516 = 443236^2 + 75246^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120112213) by changing a digit.

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 as a sum of consecutive naturals, namely, 25265014023 + ... + 25265014030.

Almost surely, 2^202120112212 is an apocalyptic number.

It is an amenable number.

202120112212 is a deficient number, since it is larger than the sum of its proper divisors (151590084166).

202120112212 is a wasteful number, since it uses less digits than its factorization.

202120112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50530028057 (or 50530028055 counting only the distinct ones).

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

Adding to 202120112212 its reverse (212211021202), we get a palindrome (414331133414).

The spelling of 202120112212 in words is "two hundred two billion, one hundred twenty million, one hundred twelve thousand, two hundred twelve".