1220931573120 has 1728 divisors, whose sum is σ = 5411483756640. Its totient is φ = 252401909760.

The previous prime is 1220931573089. The next prime is 1220931573133. The reversal of 1220931573120 is 213751390221.

It is a happy number.

1220931573120 is a `hidden beast` number, since 1 + 2 + 20 + 9 + 315 + 7 + 312 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 2343438460 + ... + 2343438980.

Almost surely, 2^{1220931573120} is an apocalyptic number.

1220931573120 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 1220931573120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2705741878320).

1220931573120 is an abundant number, since it is smaller than the sum of its proper divisors (4190552183520).

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

1220931573120 is a wasteful number, since it uses less digits than its factorization.

1220931573120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 1220931573120 in words is "one trillion, two hundred twenty billion, nine hundred thirty-one million, five hundred seventy-three thousand, one hundred twenty".