221423314292 has 6 divisors (see below), whose sum is σ = 387490800018. Its totient is φ = 110711657144.

The previous prime is 221423314279. The next prime is 221423314319. The reversal of 221423314292 is 292413324122.

It can be written as a sum of positive squares in only one way, i.e., 214624652176 + 6798662116 = 463276^2 + 82454^2 .

It is a super-2 number, since 2×221423314292² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27677914283 + ... + 27677914290.

It is an arithmetic number, because the mean of its divisors is an integer number (64581800003).

Almost surely, 2^221423314292 is an apocalyptic number.

It is an amenable number.

221423314292 is a deficient number, since it is larger than the sum of its proper divisors (166067485726).

221423314292 is a wasteful number, since it uses less digits than its factorization.

221423314292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55355828577 (or 55355828575 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The spelling of 221423314292 in words is "two hundred twenty-one billion, four hundred twenty-three million, three hundred fourteen thousand, two hundred ninety-two".