1122256321955 has 16 divisors (see below), whose sum is σ = 1361959971840. Its totient is φ = 887638591488.

The previous prime is 1122256321939. The next prime is 1122256321961. The reversal of 1122256321955 is 5591236522211.

It is a Cunningham number, because it is equal to 1059366²-1.

It is a cyclic number.

It is not a de Polignac number, because 1122256321955 - 2⁴ = 1122256321939 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5190899 + ... + 5402771.

It is an arithmetic number, because the mean of its divisors is an integer number (85122498240).

Almost surely, 2^{1122256321955} is an apocalyptic number.

1122256321955 is a deficient number, since it is larger than the sum of its proper divisors (239703649885).

1122256321955 is a wasteful number, since it uses less digits than its factorization.

1122256321955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223870.

The product of its digits is 324000, while the sum is 44.

The spelling of 1122256321955 in words is "one trillion, one hundred twenty-two billion, two hundred fifty-six million, three hundred twenty-one thousand, nine hundred fifty-five".