121220027359840 has 48 divisors (see below), whose sum is σ = 286385463704592. Its totient is φ = 48487477768704.

The previous prime is 121220027359817. The next prime is 121220027359843. The reversal of 121220027359840 is 48953720022121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220027359843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10593667 + ... + 18832573.

It is an arithmetic number, because the mean of its divisors is an integer number (5966363827179).

Almost surely, 2^{121220027359840} is an apocalyptic number.

121220027359840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220027359840 is an abundant number, since it is smaller than the sum of its proper divisors (165165436344752).

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

121220027359840 is an equidigital number, since it uses as much as digits as its factorization.

121220027359840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330879 (or 8330871 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 121220027359840 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty-seven million, three hundred fifty-nine thousand, eight hundred forty".