21222222302 has 8 divisors (see below), whose sum is σ = 32269406736. Its totient is φ = 10465753392.

The previous prime is 21222222299. The next prime is 21222222341. The reversal of 21222222302 is 20322222212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72678698 + ... + 72678989.

It is an arithmetic number, because the mean of its divisors is an integer number (4033675842).

Almost surely, 2^21222222302 is an apocalyptic number.

21222222302 is a deficient number, since it is larger than the sum of its proper divisors (11047184434).

21222222302 is a wasteful number, since it uses less digits than its factorization.

21222222302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145357762.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21222222302 its reverse (20322222212), we get a palindrome (41544444514).

The spelling of 21222222302 in words is "twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, three hundred two".