221122020102 has 96 divisors (see below), whose sum is σ = 487337222400. Its totient is φ = 66696353856.

The previous prime is 221122020071. The next prime is 221122020103. The reversal of 221122020102 is 201020221122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122020103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49991463 + ... + 49995885.

It is an arithmetic number, because the mean of its divisors is an integer number (5076429400).

Almost surely, 2^221122020102 is an apocalyptic number.

221122020102 is an abundant number, since it is smaller than the sum of its proper divisors (266215202298).

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

221122020102 is a wasteful number, since it uses less digits than its factorization.

221122020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322 (or 5299 counting only the distinct ones).

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

Adding to 221122020102 its reverse (201020221122), we get a palindrome (422142241224).

It can be divided in two parts, 2211220 and 20102, that added together give a palindrome (2231322).

The spelling of 221122020102 in words is "two hundred twenty-one billion, one hundred twenty-two million, twenty thousand, one hundred two".