121497998804 has 288 divisors, whose sum is σ = 293653785600. Its totient is φ = 43423672320.

The previous prime is 121497998803. The next prime is 121497998837. The reversal of 121497998804 is 408899794121.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121497998803) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 109555802 + ... + 109556910.

It is an arithmetic number, because the mean of its divisors is an integer number (1019631200).

Almost surely, 2^121497998804 is an apocalyptic number.

121497998804 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 121497998804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146826892800).

121497998804 is an abundant number, since it is smaller than the sum of its proper divisors (172155786796).

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

121497998804 is a wasteful number, since it uses less digits than its factorization.

121497998804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 62.

The spelling of 121497998804 in words is "one hundred twenty-one billion, four hundred ninety-seven million, nine hundred ninety-eight thousand, eight hundred four".