102121021012 has 12 divisors (see below), whose sum is σ = 178755097780. Its totient is φ = 51048135936.

The previous prime is 102121021003. The next prime is 102121021021. The reversal of 102121021012 is 210120121201.

102121021012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (102121021003) and next prime (102121021021).

It can be written as a sum of positive squares in 2 ways, for example, as 73503885456 + 28617135556 = 271116^2 + 169166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102121020983 and 102121021001.

It is a congruent number.

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, 3075063 + ... + 3108094.

Almost surely, 2^102121021012 is an apocalyptic number.

It is an amenable number.

102121021012 is a deficient number, since it is larger than the sum of its proper divisors (76634076768).

102121021012 is a wasteful number, since it uses less digits than its factorization.

102121021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187290 (or 6187288 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102121021012 its reverse (210120121201), we get a palindrome (312241142213).

The spelling of 102121021012 in words is "one hundred two billion, one hundred twenty-one million, twenty-one thousand, twelve".