102021201212 has 12 divisors (see below), whose sum is σ = 204042402480. Its totient is φ = 43723371936.

The previous prime is 102021201211. The next prime is 102021201229. The reversal of 102021201212 is 212102120201.

102021201212 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021201211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1821807137 + ... + 1821807192.

It is an arithmetic number, because the mean of its divisors is an integer number (17003533540).

Almost surely, 2^102021201212 is an apocalyptic number.

It is an amenable number.

102021201212 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.

102021201212 is a wasteful number, since it uses less digits than its factorization.

102021201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643614340 (or 3643614338 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102021201212 its reverse (212102120201), we get a palindrome (314123321413).

The spelling of 102021201212 in words is "one hundred two billion, twenty-one million, two hundred one thousand, two hundred twelve".