222623720013649 has 2 divisors, whose sum is σ = 222623720013650. Its totient is φ = 222623720013648.

The previous prime is 222623720013587. The next prime is 222623720013731. The reversal of 222623720013649 is 946310027326222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186352394699025 + 36271325314624 = 13651095^2 + 6022568^2 .

It is a cyclic number.

It is not a de Polignac number, because 222623720013649 - 2¹¹ = 222623720011601 is a prime.

It is a super-2 number, since 2×222623720013649² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222623720013449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111311860006824 + 111311860006825.

It is an arithmetic number, because the mean of its divisors is an integer number (111311860006825).

Almost surely, 2^{222623720013649} is an apocalyptic number.

It is an amenable number.

222623720013649 is a deficient number, since it is larger than the sum of its proper divisors (1).

222623720013649 is an equidigital number, since it uses as much as digits as its factorization.

222623720013649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 222623720013649 in words is "two hundred twenty-two trillion, six hundred twenty-three billion, seven hundred twenty million, thirteen thousand, six hundred forty-nine".