1220707323461 has 4 divisors (see below), whose sum is σ = 1222875543072. Its totient is φ = 1218539103852.

The previous prime is 1220707323457. The next prime is 1220707323491. The reversal of 1220707323461 is 1643237070221.

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 1220707323461 - 2² = 1220707323457 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 (1220707323491) 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, 1084108961 + ... + 1084110086.

It is an arithmetic number, because the mean of its divisors is an integer number (305718885768).

Almost surely, 2^{1220707323461} is an apocalyptic number.

It is an amenable number.

1220707323461 is a deficient number, since it is larger than the sum of its proper divisors (2168219611).

1220707323461 is an equidigital number, since it uses as much as digits as its factorization.

1220707323461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168219610.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 1220707323461 in words is "one trillion, two hundred twenty billion, seven hundred seven million, three hundred twenty-three thousand, four hundred sixty-one".