202120001212 has 96 divisors (see below), whose sum is σ = 387821952000. Its totient is φ = 91811985408.

The previous prime is 202120001191. The next prime is 202120001287. The reversal of 202120001212 is 212100021202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202120001192 and 202120001201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49307539 + ... + 49311637.

It is an arithmetic number, because the mean of its divisors is an integer number (4039812000).

Almost surely, 2^202120001212 is an apocalyptic number.

It is an amenable number.

202120001212 is a deficient number, since it is larger than the sum of its proper divisors (185701950788).

202120001212 is a wasteful number, since it uses less digits than its factorization.

202120001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4403 (or 4401 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202120001212 its reverse (212100021202), we get a palindrome (414220022414).

The spelling of 202120001212 in words is "two hundred two billion, one hundred twenty million, one thousand, two hundred twelve".