221413234511312 has 20 divisors (see below), whose sum is σ = 429701932469796. Its totient is φ = 110522413228800.

The previous prime is 221413234511299. The next prime is 221413234511393. The reversal of 221413234511312 is 213115432314122.

It can be written as a sum of positive squares in 2 ways, for example, as 204364064995216 + 17049169516096 = 14295596^2 + 4129064^2 .

It is a super-2 number, since 2×221413234511312² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11512741763 + ... + 11512760994.

Almost surely, 2^{221413234511312} is an apocalyptic number.

It is an amenable number.

221413234511312 is a deficient number, since it is larger than the sum of its proper divisors (208288697958484).

221413234511312 is a wasteful number, since it uses less digits than its factorization.

221413234511312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23025503366 (or 23025503360 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

Adding to 221413234511312 its reverse (213115432314122), we get a palindrome (434528666825434).

The spelling of 221413234511312 in words is "two hundred twenty-one trillion, four hundred thirteen billion, two hundred thirty-four million, five hundred eleven thousand, three hundred twelve".