121111462864 has 80 divisors (see below), whose sum is σ = 274605674112. Its totient is φ = 50662047744.

The previous prime is 121111462859. The next prime is 121111462867. The reversal of 121111462864 is 468264111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111462867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7471152 + ... + 7487344.

Almost surely, 2^121111462864 is an apocalyptic number.

121111462864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121111462864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137302837056).

121111462864 is an abundant number, since it is smaller than the sum of its proper divisors (153494211248).

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

121111462864 is a wasteful number, since it uses less digits than its factorization.

121111462864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17804 (or 17798 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

Adding to 121111462864 its reverse (468264111121), we get a palindrome (589375573985).

The spelling of 121111462864 in words is "one hundred twenty-one billion, one hundred eleven million, four hundred sixty-two thousand, eight hundred sixty-four".