1023773221800 has 144 divisors (see below), whose sum is σ = 3929339175840. Its totient is φ = 234005304960.

The previous prime is 1023773221777. The next prime is 1023773221819. The reversal of 1023773221800 is 81223773201.

1023773221800 is a `hidden beast` number, since 102 + 377 + 3 + 2 + 2 + 180 + 0 = 666.

It is a super-2 number, since 2×1023773221800² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40613322 + ... + 40638521.

It is an arithmetic number, because the mean of its divisors is an integer number (27287077610).

Almost surely, 2^{1023773221800} is an apocalyptic number.

1023773221800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023773221800 is an abundant number, since it is smaller than the sum of its proper divisors (2905565954040).

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

1023773221800 is a wasteful number, since it uses less digits than its factorization.

1023773221800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81251872 (or 81251860 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 1023773221800 in words is "one trillion, twenty-three billion, seven hundred seventy-three million, two hundred twenty-one thousand, eight hundred".