102021021212 has 24 divisors (see below), whose sum is σ = 194995808112. Its totient is φ = 46318809600.

The previous prime is 102021021143. The next prime is 102021021217. The reversal of 102021021212 is 212120120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021021217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321589 + ... + 1396652.

It is an arithmetic number, because the mean of its divisors is an integer number (8124825338).

Almost surely, 2^102021021212 is an apocalyptic number.

It is an amenable number.

102021021212 is a deficient number, since it is larger than the sum of its proper divisors (92974786900).

102021021212 is a wasteful number, since it uses less digits than its factorization.

102021021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719109 (or 2719107 counting only the distinct ones).

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

Adding to 102021021212 its reverse (212120120201), we get a palindrome (314141141413).

The spelling of 102021021212 in words is "one hundred two billion, twenty-one million, twenty-one thousand, two hundred twelve".