1201211525120 has 48 divisors (see below), whose sum is σ = 2882203849980. Its totient is φ = 480484605952.

The previous prime is 1201211525093. The next prime is 1201211525149. The reversal of 1201211525120 is 215251121021.

It can be written as a sum of positive squares in 2 ways, for example, as 1142949151744 + 58262373376 = 1069088^2 + 241376^2 .

It is a super-2 number, since 2×1201211525120² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58642667 + ... + 58663146.

Almost surely, 2^{1201211525120} is an apocalyptic number.

1201211525120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201211525120 is an abundant number, since it is smaller than the sum of its proper divisors (1680992324860).

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

1201211525120 is an equidigital number, since it uses as much as digits as its factorization.

1201211525120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117305840 (or 117305820 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 1201211525120 its reverse (215251121021), we get a palindrome (1416462646141).

The spelling of 1201211525120 in words is "one trillion, two hundred one billion, two hundred eleven million, five hundred twenty-five thousand, one hundred twenty".