1226964957121 has 4 divisors (see below), whose sum is σ = 1226968367044. Its totient is φ = 1226961547200.

The previous prime is 1226964957089. The next prime is 1226964957151. The reversal of 1226964957121 is 1217594696221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 300703076496 + 926261880625 = 548364^2 + 962425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226964957121 - 2⁵ = 1226964957089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226964957151) 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, 1091700 + ... + 1909381.

It is an arithmetic number, because the mean of its divisors is an integer number (306742091761).

Almost surely, 2^{1226964957121} is an apocalyptic number.

It is an amenable number.

1226964957121 is a deficient number, since it is larger than the sum of its proper divisors (3409923).

1226964957121 is an equidigital number, since it uses as much as digits as its factorization.

1226964957121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409922.

The product of its digits is 3265920, while the sum is 55.

The spelling of 1226964957121 in words is "one trillion, two hundred twenty-six billion, nine hundred sixty-four million, nine hundred fifty-seven thousand, one hundred twenty-one".