21222003102 has 16 divisors (see below), whose sum is σ = 42446219520. Its totient is φ = 7073632152.

The previous prime is 21222003079. The next prime is 21222003113. The reversal of 21222003102 is 20130022212.

It is a happy number.

It is a super-2 number, since 2×21222003102² (a number of 21 digits) contains 22 as substring.

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, 49083 + ... + 211785.

It is an arithmetic number, because the mean of its divisors is an integer number (2652888720).

Almost surely, 2^21222003102 is an apocalyptic number.

21222003102 is an abundant number, since it is smaller than the sum of its proper divisors (21224216418).

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

21222003102 is a wasteful number, since it uses less digits than its factorization.

21222003102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184447.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21222003102 its reverse (20130022212), we get a palindrome (41352025314).

The spelling of 21222003102 in words is "twenty-one billion, two hundred twenty-two million, three thousand, one hundred two".