201123113121210 has 64 divisors (see below), whose sum is σ = 551653446212352. Its totient is φ = 45970874052096.

The previous prime is 201123113121197. The next prime is 201123113121253. The reversal of 201123113121210 is 12121311321102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94063774 + ... + 96178166.

It is an arithmetic number, because the mean of its divisors is an integer number (8619585097068).

Almost surely, 2^{201123113121210} is an apocalyptic number.

201123113121210 is an abundant number, since it is smaller than the sum of its proper divisors (350530333091142).

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

201123113121210 is a wasteful number, since it uses less digits than its factorization.

201123113121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567367.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 201123113121210 its reverse (12121311321102), we get a palindrome (213244424442312).

The spelling of 201123113121210 in words is "two hundred one trillion, one hundred twenty-three billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred ten".