1225892766121 has 8 divisors (see below), whose sum is σ = 1276676109000. Its totient is φ = 1175676835200.

The previous prime is 1225892766101. The next prime is 1225892766167. The reversal of 1225892766121 is 1216672985221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13392275625 + 1212500490496 = 115725^2 + 1101136^2 .

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 1225892766121 - 2⁵ = 1225892766089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225892766101) 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, 141848580 + ... + 141857221.

It is an arithmetic number, because the mean of its divisors is an integer number (159584513625).

Almost surely, 2^{1225892766121} is an apocalyptic number.

It is an amenable number.

1225892766121 is a deficient number, since it is larger than the sum of its proper divisors (50783342879).

1225892766121 is a wasteful number, since it uses less digits than its factorization.

1225892766121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283705979.

The product of its digits is 1451520, while the sum is 52.

The spelling of 1225892766121 in words is "one trillion, two hundred twenty-five billion, eight hundred ninety-two million, seven hundred sixty-six thousand, one hundred twenty-one".