121401500000 has 168 divisors, whose sum is σ = 325932234264. Its totient is φ = 44144000000.

The previous prime is 121401499987. The next prime is 121401500063. The reversal of 121401500000 is 5104121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5488964 + ... + 5511036.

It is an arithmetic number, because the mean of its divisors is an integer number (1940072823).

Almost surely, 2^121401500000 is an apocalyptic number.

121401500000 is a gapful number since it is divisible by the number (10) 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 121401500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162966117132).

121401500000 is an abundant number, since it is smaller than the sum of its proper divisors (204530734264).

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

121401500000 is an frugal number, since it uses more digits than its factorization.

121401500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22124 (or 22091 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 121401500000 its reverse (5104121), we get a palindrome (121406604121).

The spelling of 121401500000 in words is "one hundred twenty-one billion, four hundred one million, five hundred thousand".