21944444102 has 24 divisors (see below), whose sum is σ = 39105522144. Its totient is φ = 9204658512.

The previous prime is 21944444099. The next prime is 21944444107. The reversal of 21944444102 is 20144444912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21944444107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2377553 + ... + 2386764.

It is an arithmetic number, because the mean of its divisors is an integer number (1629396756).

Almost surely, 2^21944444102 is an apocalyptic number.

21944444102 is a deficient number, since it is larger than the sum of its proper divisors (17161078042).

21944444102 is a wasteful number, since it uses less digits than its factorization.

21944444102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764380 (or 4764373 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 21944444102 in words is "twenty-one billion, nine hundred forty-four million, four hundred forty-four thousand, one hundred two".