221002102212 has 24 divisors (see below), whose sum is σ = 517329688512. Its totient is φ = 73430493600.

The previous prime is 221002102171. The next prime is 221002102253. The reversal of 221002102212 is 212201200122.

It is an interprime number because it is at equal distance from previous prime (221002102171) and next prime (221002102253).

It is a junction number, because it is equal to n+sod(n) for n = 221002102191 and 221002102200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29605339 + ... + 29612802.

It is an arithmetic number, because the mean of its divisors is an integer number (21555403688).

Almost surely, 2^221002102212 is an apocalyptic number.

It is an amenable number.

221002102212 is an abundant number, since it is smaller than the sum of its proper divisors (296327586300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221002102212 is a wasteful number, since it uses less digits than its factorization.

221002102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59218459 (or 59218457 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221002102212 its reverse (212201200122), we get a palindrome (433203302334).

The spelling of 221002102212 in words is "two hundred twenty-one billion, two million, one hundred two thousand, two hundred twelve".