2221312122211 has 8 divisors (see below), whose sum is σ = 2733922612064. Its totient is φ = 1757521679040.

The previous prime is 2221312122181. The next prime is 2221312122217. The reversal of 2221312122211 is 1122212131222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221312122211 - 2¹⁵ = 2221312089443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221312122217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12205011570 + ... + 12205011751.

It is an arithmetic number, because the mean of its divisors is an integer number (341740326508).

Almost surely, 2^{2221312122211} is an apocalyptic number.

2221312122211 is a deficient number, since it is larger than the sum of its proper divisors (512610489853).

2221312122211 is a wasteful number, since it uses less digits than its factorization.

2221312122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24410023341.

The product of its digits is 384, while the sum is 22.

Adding to 2221312122211 its reverse (1122212131222), we get a palindrome (3343524253433).

The spelling of 2221312122211 in words is "two trillion, two hundred twenty-one billion, three hundred twelve million, one hundred twenty-two thousand, two hundred eleven".