201231121311120 has 160 divisors (see below), whose sum is σ = 654209985024000. Its totient is φ = 51070585370112.

The previous prime is 201231121311113. The next prime is 201231121311149. The reversal of 201231121311120 is 21113121132102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90496780 + ... + 92693739.

It is an arithmetic number, because the mean of its divisors is an integer number (4088812406400).

Almost surely, 2^{201231121311120} is an apocalyptic number.

201231121311120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231121311120 is an abundant number, since it is smaller than the sum of its proper divisors (452978863712880).

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

201231121311120 is a wasteful number, since it uses less digits than its factorization.

201231121311120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183190757 (or 183190751 counting only the distinct ones).

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

Adding to 201231121311120 its reverse (21113121132102), we get a palindrome (222344242443222).

The spelling of 201231121311120 in words is "two hundred one trillion, two hundred thirty-one billion, one hundred twenty-one million, three hundred eleven thousand, one hundred twenty".