121615250160 has 320 divisors, whose sum is σ = 402299251200. Its totient is φ = 30304751616.

The previous prime is 121615250153. The next prime is 121615250171. The reversal of 121615250160 is 61052516121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 152590882 + ... + 152591678.

It is an arithmetic number, because the mean of its divisors is an integer number (1257185160).

Almost surely, 2^121615250160 is an apocalyptic number.

121615250160 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 121615250160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201149625600).

121615250160 is an abundant number, since it is smaller than the sum of its proper divisors (280684001040).

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

121615250160 is a wasteful number, since it uses less digits than its factorization.

121615250160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 121615250160 its reverse (61052516121), we get a palindrome (182667766281).

The spelling of 121615250160 in words is "one hundred twenty-one billion, six hundred fifteen million, two hundred fifty thousand, one hundred sixty".