221120210100102 has 64 divisors (see below), whose sum is σ = 467093462976000. Its totient is φ = 69685293904128.

The previous prime is 221120210100091. The next prime is 221120210100143. The reversal of 221120210100102 is 201001012021122.

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, 60854202 + ... + 64385357.

It is an arithmetic number, because the mean of its divisors is an integer number (7298335359000).

Almost surely, 2^{221120210100102} is an apocalyptic number.

221120210100102 is an abundant number, since it is smaller than the sum of its proper divisors (245973252875898).

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

221120210100102 is a wasteful number, since it uses less digits than its factorization.

221120210100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125239805.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221120210100102 its reverse (201001012021122), we get a palindrome (422121222121224).

The spelling of 221120210100102 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred ten million, one hundred thousand, one hundred two".