201121121112010 has 128 divisors (see below), whose sum is σ = 418416756019200. Its totient is φ = 68836067838720.

The previous prime is 201121121111957. The next prime is 201121121112019. The reversal of 201121121112010 is 10211121121102.

It is not an unprimeable number, because it can be changed into a prime (201121121112019) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 412399632 + ... + 412887028.

It is an arithmetic number, because the mean of its divisors is an integer number (3268880906400).

Almost surely, 2^{201121121112010} is an apocalyptic number.

201121121112010 is an abundant number, since it is smaller than the sum of its proper divisors (217295634907190).

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

201121121112010 is a wasteful number, since it uses less digits than its factorization.

201121121112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488716.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 201121121112010 its reverse (10211121121102), we get a palindrome (211332242233112).

The spelling of 201121121112010 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, ten".