221420011312 has 40 divisors (see below), whose sum is σ = 432844407296. Its totient is φ = 109720106496.

The previous prime is 221420011291. The next prime is 221420011331. The reversal of 221420011312 is 213110024122.

It is a super-2 number, since 2×221420011312² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221420011312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845838 + ... + 1962130.

Almost surely, 2^221420011312 is an apocalyptic number.

It is an amenable number.

221420011312 is a deficient number, since it is larger than the sum of its proper divisors (211424395984).

221420011312 is a wasteful number, since it uses less digits than its factorization.

221420011312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117365 (or 117359 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221420011312 its reverse (213110024122), we get a palindrome (434530035434).

The spelling of 221420011312 in words is "two hundred twenty-one billion, four hundred twenty million, eleven thousand, three hundred twelve".