221320002212310 has 32 divisors (see below), whose sum is σ = 531728900842752. Its totient is φ = 58956345530720.

The previous prime is 221320002212291. The next prime is 221320002212363. The reversal of 221320002212310 is 13212200023122.

It is a super-2 number, since 2×221320002212310² (a number of 29 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 15 ways as a sum of consecutive naturals, for example, 3895078986 + ... + 3895135805.

It is an arithmetic number, because the mean of its divisors is an integer number (16616528151336).

Almost surely, 2^{221320002212310} is an apocalyptic number.

221320002212310 is an abundant number, since it is smaller than the sum of its proper divisors (310408898630442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221320002212310 is a wasteful number, since it uses less digits than its factorization.

221320002212310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7790215748.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221320002212310 its reverse (13212200023122), we get a palindrome (234532202235432).

The spelling of 221320002212310 in words is "two hundred twenty-one trillion, three hundred twenty billion, two million, two hundred twelve thousand, three hundred ten".