21222023102 has 16 divisors (see below), whose sum is σ = 36406987872. Its totient is φ = 9088558560.

The previous prime is 21222023099. The next prime is 21222023107. The reversal of 21222023102 is 20132022212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222023107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529493 + ... + 568160.

It is an arithmetic number, because the mean of its divisors is an integer number (2275436742).

Almost surely, 2^21222023102 is an apocalyptic number.

21222023102 is a deficient number, since it is larger than the sum of its proper divisors (15184964770).

21222023102 is a wasteful number, since it uses less digits than its factorization.

21222023102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099043.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21222023102 its reverse (20132022212), we get a palindrome (41354045314).

The spelling of 21222023102 in words is "twenty-one billion, two hundred twenty-two million, twenty-three thousand, one hundred two".