2231221565630 has 64 divisors (see below), whose sum is σ = 4298915566080. Its totient is φ = 830827008000.

The previous prime is 2231221565623. The next prime is 2231221565659. The reversal of 2231221565630 is 365651221322.

It is a super-3 number, since 3×2231221565630³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16949906 + ... + 17081034.

It is an arithmetic number, because the mean of its divisors is an integer number (67170555720).

Almost surely, 2^{2231221565630} is an apocalyptic number.

2231221565630 is a deficient number, since it is larger than the sum of its proper divisors (2067694000450).

2231221565630 is a wasteful number, since it uses less digits than its factorization.

2231221565630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132245.

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 2231221565630 its reverse (365651221322), we get a palindrome (2596872786952).

The spelling of 2231221565630 in words is "two trillion, two hundred thirty-one billion, two hundred twenty-one million, five hundred sixty-five thousand, six hundred thirty".