221094079016831 has 8 divisors (see below), whose sum is σ = 221482252037904. Its totient is φ = 220705909381440.

The previous prime is 221094079016803. The next prime is 221094079016873. The reversal of 221094079016831 is 138610970490122.

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

It is a cyclic number.

It is not a de Polignac number, because 221094079016831 - 2¹⁰ = 221094079015807 is a prime.

It is a super-2 number, since 2×221094079016831² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221094079096831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155045921 + ... + 156465413.

It is an arithmetic number, because the mean of its divisors is an integer number (27685281504738).

Almost surely, 2^{221094079016831} is an apocalyptic number.

221094079016831 is a deficient number, since it is larger than the sum of its proper divisors (388173021073).

221094079016831 is a wasteful number, since it uses less digits than its factorization.

221094079016831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692841.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 221094079016831 in words is "two hundred twenty-one trillion, ninety-four billion, seventy-nine million, sixteen thousand, eight hundred thirty-one".