202101321212 has 12 divisors (see below), whose sum is σ = 404202642480. Its totient is φ = 86614851936.

The previous prime is 202101321211. The next prime is 202101321251. The reversal of 202101321212 is 212123101202.

202101321212 is an admirable number.

It is a super-2 number, since 2×202101321212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101321211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3608952137 + ... + 3608952192.

It is an arithmetic number, because the mean of its divisors is an integer number (33683553540).

Almost surely, 2^202101321212 is an apocalyptic number.

It is an amenable number.

202101321212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

202101321212 is a wasteful number, since it uses less digits than its factorization.

202101321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217904340 (or 7217904338 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 202101321212 its reverse (212123101202), we get a palindrome (414224422414).

The spelling of 202101321212 in words is "two hundred two billion, one hundred one million, three hundred twenty-one thousand, two hundred twelve".