221213023310 has 16 divisors (see below), whose sum is σ = 398223893376. Its totient is φ = 88476220128.

The previous prime is 221213023309. The next prime is 221213023333. The reversal of 221213023310 is 13320312122.

It is a super-2 number, since 2×221213023310² (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 in 7 ways as a sum of consecutive naturals, for example, 1019837 + ... + 1217576.

It is an arithmetic number, because the mean of its divisors is an integer number (24888993336).

Almost surely, 2^221213023310 is an apocalyptic number.

221213023310 is a deficient number, since it is larger than the sum of its proper divisors (177010870066).

221213023310 is a wasteful number, since it uses less digits than its factorization.

221213023310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247307.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221213023310 its reverse (13320312122), we get a palindrome (234533335432).

The spelling of 221213023310 in words is "two hundred twenty-one billion, two hundred thirteen million, twenty-three thousand, three hundred ten".