121111431320000 has 210 divisors, whose sum is σ = 330100504637904. Its totient is φ = 44040518720000.

The previous prime is 121111431319981. The next prime is 121111431320041. The reversal of 121111431320000 is 23134111121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7671512 + ... + 17351511.

Almost surely, 2^{121111431320000} is an apocalyptic number.

121111431320000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111431320000 is an abundant number, since it is smaller than the sum of its proper divisors (208989073317904).

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

121111431320000 is an equidigital number, since it uses as much as digits as its factorization.

121111431320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25023077 (or 25023041 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121111431320000 its reverse (23134111121), we get a palindrome (121134565431121).

The spelling of 121111431320000 in words is "one hundred twenty-one trillion, one hundred eleven billion, four hundred thirty-one million, three hundred twenty thousand".