21946354222 has 32 divisors (see below), whose sum is σ = 37005417792. Its totient is φ = 9685488384.

The previous prime is 21946354219. The next prime is 21946354237. The reversal of 21946354222 is 22245364912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3427528 + ... + 3433924.

It is an arithmetic number, because the mean of its divisors is an integer number (1156419306).

Almost surely, 2^21946354222 is an apocalyptic number.

21946354222 is a deficient number, since it is larger than the sum of its proper divisors (15059063570).

21946354222 is a wasteful number, since it uses less digits than its factorization.

21946354222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12172.

The product of its digits is 207360, while the sum is 40.

The spelling of 21946354222 in words is "twenty-one billion, nine hundred forty-six million, three hundred fifty-four thousand, two hundred twenty-two".