201230120121000 has 128 divisors (see below), whose sum is σ = 630579627475200. Its totient is φ = 53427036076800.

The previous prime is 201230120120987. The next prime is 201230120121083. The reversal of 201230120121000 is 121021032102.

It is a super-2 number, since 2×201230120121000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145768692 + ... + 147142691.

It is an arithmetic number, because the mean of its divisors is an integer number (4926403339650).

Almost surely, 2^{201230120121000} is an apocalyptic number.

201230120121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201230120121000 is an abundant number, since it is smaller than the sum of its proper divisors (429349507354200).

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

201230120121000 is a wasteful number, since it uses less digits than its factorization.

201230120121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292911636 (or 292911622 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201230120121000 its reverse (121021032102), we get a palindrome (201351141153102).

The spelling of 201230120121000 in words is "two hundred one trillion, two hundred thirty billion, one hundred twenty million, one hundred twenty-one thousand".