1222160725761 has 4 divisors (see below), whose sum is σ = 1629547634352. Its totient is φ = 814773817172.

The previous prime is 1222160725717. The next prime is 1222160725763. The reversal of 1222160725761 is 1675270612221.

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 1222160725761 - 2²² = 1222156531457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222160725763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203693454291 + ... + 203693454296.

It is an arithmetic number, because the mean of its divisors is an integer number (407386908588).

Almost surely, 2^{1222160725761} is an apocalyptic number.

It is an amenable number.

1222160725761 is a deficient number, since it is larger than the sum of its proper divisors (407386908591).

1222160725761 is an equidigital number, since it uses as much as digits as its factorization.

1222160725761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407386908590.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 1222160725761 in words is "one trillion, two hundred twenty-two billion, one hundred sixty million, seven hundred twenty-five thousand, seven hundred sixty-one".