222611426135261 has 4 divisors (see below), whose sum is σ = 222635977972512. Its totient is φ = 222586874298012.

The previous prime is 222611426135239. The next prime is 222611426135297. The reversal of 222611426135261 is 162531624116222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222611426135261 - 2¹⁴ = 222611426118877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222611426135561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12275905025 + ... + 12275923158.

It is an arithmetic number, because the mean of its divisors is an integer number (55658994493128).

Almost surely, 2^{222611426135261} is an apocalyptic number.

It is an amenable number.

222611426135261 is a deficient number, since it is larger than the sum of its proper divisors (24551837251).

222611426135261 is an equidigital number, since it uses as much as digits as its factorization.

222611426135261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24551837250.

The product of its digits is 414720, while the sum is 44.

The spelling of 222611426135261 in words is "two hundred twenty-two trillion, six hundred eleven billion, four hundred twenty-six million, one hundred thirty-five thousand, two hundred sixty-one".