21244228522 has 8 divisors (see below), whose sum is σ = 34763283072. Its totient is φ = 9656467500.

The previous prime is 21244228451. The next prime is 21244228573. The reversal of 21244228522 is 22582244212.

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

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, 482823354 + ... + 482823397.

It is an arithmetic number, because the mean of its divisors is an integer number (4345410384).

Almost surely, 2^21244228522 is an apocalyptic number.

21244228522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21244228522 is a deficient number, since it is larger than the sum of its proper divisors (13519054550).

21244228522 is a wasteful number, since it uses less digits than its factorization.

21244228522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965646764.

The product of its digits is 40960, while the sum is 34.

The spelling of 21244228522 in words is "twenty-one billion, two hundred forty-four million, two hundred twenty-eight thousand, five hundred twenty-two".