21221301295 has 8 divisors (see below), whose sum is σ = 25593530400. Its totient is φ = 16891728480.

The previous prime is 21221301287. The next prime is 21221301301. The reversal of 21221301295 is 59210312212.

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

It is not a de Polignac number, because 21221301295 - 2³ = 21221301287 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10662976 + ... + 10664965.

It is an arithmetic number, because the mean of its divisors is an integer number (3199191300).

Almost surely, 2^21221301295 is an apocalyptic number.

21221301295 is a deficient number, since it is larger than the sum of its proper divisors (4372229105).

21221301295 is a wasteful number, since it uses less digits than its factorization.

21221301295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21328145.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 21221301295 in words is "twenty-one billion, two hundred twenty-one million, three hundred one thousand, two hundred ninety-five".