102021020012 has 12 divisors (see below), whose sum is σ = 178543854720. Its totient is φ = 51008490096.

The previous prime is 102021019999. The next prime is 102021020053. The reversal of 102021020012 is 210020120201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102021019975 and 102021020002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388343 + ... + 595694.

It is an arithmetic number, because the mean of its divisors is an integer number (14878654560).

Almost surely, 2^102021020012 is an apocalyptic number.

It is an amenable number.

102021020012 is a deficient number, since it is larger than the sum of its proper divisors (76522834708).

102021020012 is a wasteful number, since it uses less digits than its factorization.

102021020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009960 (or 1009958 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102021020012 its reverse (210020120201), we get a palindrome (312041140213).

The spelling of 102021020012 in words is "one hundred two billion, twenty-one million, twenty thousand, twelve".