221210202102 has 64 divisors (see below), whose sum is σ = 463958337024. Its totient is φ = 70179676160.

The previous prime is 221210202089. The next prime is 221210202137. The reversal of 221210202102 is 201202012122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38690548 + ... + 38696264.

It is an arithmetic number, because the mean of its divisors is an integer number (7249349016).

Almost surely, 2^221210202102 is an apocalyptic number.

221210202102 is an abundant number, since it is smaller than the sum of its proper divisors (242748134922).

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

221210202102 is a wasteful number, since it uses less digits than its factorization.

221210202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7093.

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

Adding to 221210202102 its reverse (201202012122), we get a palindrome (422412214224).

The spelling of 221210202102 in words is "two hundred twenty-one billion, two hundred ten million, two hundred two thousand, one hundred two".