1200357730220 has 72 divisors (see below), whose sum is σ = 2771787008592. Its totient is φ = 436329266560.

The previous prime is 1200357730189. The next prime is 1200357730277. The reversal of 1200357730220 is 220377530021.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6424967 + ... + 6609153.

It is an arithmetic number, because the mean of its divisors is an integer number (38497041786).

Almost surely, 2^{1200357730220} is an apocalyptic number.

1200357730220 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 1200357730220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385893504296).

1200357730220 is an abundant number, since it is smaller than the sum of its proper divisors (1571429278372).

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

1200357730220 is a wasteful number, since it uses less digits than its factorization.

1200357730220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186911 (or 186898 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 1200357730220 in words is "one trillion, two hundred billion, three hundred fifty-seven million, seven hundred thirty thousand, two hundred twenty".