21222401102 has 16 divisors (see below), whose sum is σ = 36480399360. Its totient is φ = 9070529688.

The previous prime is 21222401041. The next prime is 21222401141. The reversal of 21222401102 is 20110422212.

It is a congruent number.

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, 2060102 + ... + 2070377.

It is an arithmetic number, because the mean of its divisors is an integer number (2280024960).

Almost surely, 2^21222401102 is an apocalyptic number.

21222401102 is a deficient number, since it is larger than the sum of its proper divisors (15257998258).

21222401102 is a wasteful number, since it uses less digits than its factorization.

21222401102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130855.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21222401102 its reverse (20110422212), we get a palindrome (41332823314).

The spelling of 21222401102 in words is "twenty-one billion, two hundred twenty-two million, four hundred one thousand, one hundred two".