1200121023330 has 80 divisors (see below), whose sum is σ = 3243373186680. Its totient is φ = 318407701248.

The previous prime is 1200121023281. The next prime is 1200121023341. The reversal of 1200121023330 is 333201210021.

1200121023330 is a `hidden beast` number, since 120 + 0 + 1 + 210 + 2 + 3 + 330 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1083200111361 + 116920911969 = 1040769^2 + 341937^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3600915 + ... + 3920054.

Almost surely, 2^{1200121023330} is an apocalyptic number.

1200121023330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200121023330 is an abundant number, since it is smaller than the sum of its proper divisors (2043252163350).

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

1200121023330 is a wasteful number, since it uses less digits than its factorization.

1200121023330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521185 (or 7521176 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1200121023330 its reverse (333201210021), we get a palindrome (1533322233351).

The spelling of 1200121023330 in words is "one trillion, two hundred billion, one hundred twenty-one million, twenty-three thousand, three hundred thirty".