102121120213 has 12 divisors (see below), whose sum is σ = 118035996640. Its totient is φ = 86548831776.

The previous prime is 102121120187. The next prime is 102121120229. The reversal of 102121120213 is 312021121201.

It is a de Polignac number, because none of the positive numbers 2^k-102121120213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121120313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 865443 + ... + 976336.

Almost surely, 2^102121120213 is an apocalyptic number.

It is an amenable number.

102121120213 is a deficient number, since it is larger than the sum of its proper divisors (15914876427).

102121120213 is an frugal number, since it uses more digits than its factorization.

102121120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841964 (or 1841875 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102121120213 its reverse (312021121201), we get a palindrome (414142241414).

The spelling of 102121120213 in words is "one hundred two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred thirteen".