1223253557000 has 128 divisors (see below), whose sum is σ = 2910989577600. Its totient is φ = 481006944000.

The previous prime is 1223253556951. The next prime is 1223253557017. The reversal of 1223253557000 is 7553523221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132914399 + ... + 132923601.

It is an arithmetic number, because the mean of its divisors is an integer number (22742106075).

Almost surely, 2^{1223253557000} is an apocalyptic number.

1223253557000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223253557000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455494788800).

1223253557000 is an abundant number, since it is smaller than the sum of its proper divisors (1687736020600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223253557000 is a wasteful number, since it uses less digits than its factorization.

1223253557000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11464 (or 11450 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

The spelling of 1223253557000 in words is "one trillion, two hundred twenty-three billion, two hundred fifty-three million, five hundred fifty-seven thousand".