221534700331 has 8 divisors (see below), whose sum is σ = 254508079104. Its totient is φ = 188892712680.

The previous prime is 221534700307. The next prime is 221534700389. The reversal of 221534700331 is 133007435122.

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

It is not a de Polignac number, because 221534700331 - 2⁷ = 221534700203 is a prime.

It is a super-2 number, since 2×221534700331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221534700293 and 221534700302.

It is not an unprimeable number, because it can be changed into a prime (221534700631) 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, 82846345 + ... + 82849018.

It is an arithmetic number, because the mean of its divisors is an integer number (31813509888).

Almost surely, 2^221534700331 is an apocalyptic number.

221534700331 is a deficient number, since it is larger than the sum of its proper divisors (32973378773).

221534700331 is a wasteful number, since it uses less digits than its factorization.

221534700331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165695561.

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 221534700331 in words is "two hundred twenty-one billion, five hundred thirty-four million, seven hundred thousand, three hundred thirty-one".