21941285356 has 12 divisors (see below), whose sum is σ = 38398392760. Its totient is φ = 10970316000.

The previous prime is 21941285323. The next prime is 21941285389. The reversal of 21941285356 is 65358214912.

It is an interprime number because it is at equal distance from previous prime (21941285323) and next prime (21941285389).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 130960 + ... + 247048.

Almost surely, 2^21941285356 is an apocalyptic number.

It is an amenable number.

21941285356 is a deficient number, since it is larger than the sum of its proper divisors (16457107404).

21941285356 is a wasteful number, since it uses less digits than its factorization.

21941285356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163344 (or 163342 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 21941285356 in words is "twenty-one billion, nine hundred forty-one million, two hundred eighty-five thousand, three hundred fifty-six".