221122012102 has 4 divisors (see below), whose sum is σ = 331683018156. Its totient is φ = 110561006050.

The previous prime is 221122012093. The next prime is 221122012109. The reversal of 221122012102 is 201210221122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122012109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55280503024 + ... + 55280503027.

It is an arithmetic number, because the mean of its divisors is an integer number (82920754539).

Almost surely, 2^221122012102 is an apocalyptic number.

221122012102 is a deficient number, since it is larger than the sum of its proper divisors (110561006054).

221122012102 is a wasteful number, since it uses less digits than its factorization.

221122012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110561006053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221122012102 its reverse (201210221122), we get a palindrome (422332233224).

The spelling of 221122012102 in words is "two hundred twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred two".