2212212653665 has 16 divisors (see below), whose sum is σ = 3165799972608. Its totient is φ = 1450991653056.

The previous prime is 2212212653663. The next prime is 2212212653669. The reversal of 2212212653665 is 5663562122122.

It is a cyclic number.

It is not a de Polignac number, because 2212212653665 - 2¹ = 2212212653663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2212212653663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374044322 + ... + 1374045931.

It is an arithmetic number, because the mean of its divisors is an integer number (197862498288).

Almost surely, 2^{2212212653665} is an apocalyptic number.

It is an amenable number.

2212212653665 is a deficient number, since it is larger than the sum of its proper divisors (953587318943).

2212212653665 is a wasteful number, since it uses less digits than its factorization.

2212212653665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748090288.

The product of its digits is 518400, while the sum is 43.

Adding to 2212212653665 its reverse (5663562122122), we get a palindrome (7875774775787).

The spelling of 2212212653665 in words is "two trillion, two hundred twelve billion, two hundred twelve million, six hundred fifty-three thousand, six hundred sixty-five".