102213030021 has 16 divisors (see below), whose sum is σ = 143472465600. Its totient is φ = 64548586368.

The previous prime is 102213029959. The next prime is 102213030037. The reversal of 102213030021 is 120030312201.

It is not a de Polignac number, because 102213030021 - 2²² = 102208835717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102213030091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459735 + ... + 644811.

It is an arithmetic number, because the mean of its divisors is an integer number (8967029100).

Almost surely, 2^102213030021 is an apocalyptic number.

It is an amenable number.

102213030021 is a deficient number, since it is larger than the sum of its proper divisors (41259435579).

102213030021 is a wasteful number, since it uses less digits than its factorization.

102213030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194788.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 102213030021 its reverse (120030312201), we get a palindrome (222243342222).

The spelling of 102213030021 in words is "one hundred two billion, two hundred thirteen million, thirty thousand, twenty-one".