1225220366123 has 32 divisors (see below), whose sum is σ = 1384611604992. Its totient is φ = 1075700102400.

The previous prime is 1225220366099. The next prime is 1225220366137. The reversal of 1225220366123 is 3216630225221.

It is a cyclic number.

It is not a de Polignac number, because 1225220366123 - 2²⁰ = 1225219317547 is a prime.

It is a super-2 number, since 2×1225220366123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225220366423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74878463 + ... + 74894823.

It is an arithmetic number, because the mean of its divisors is an integer number (43269112656).

Almost surely, 2^{1225220366123} is an apocalyptic number.

1225220366123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1225220366123 is a deficient number, since it is larger than the sum of its proper divisors (159391238869).

1225220366123 is a wasteful number, since it uses less digits than its factorization.

1225220366123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17795.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 1225220366123 in words is "one trillion, two hundred twenty-five billion, two hundred twenty million, three hundred sixty-six thousand, one hundred twenty-three".