121884493771290 has 128 divisors (see below), whose sum is σ = 302727323787264. Its totient is φ = 31374094752000.

The previous prime is 121884493771279. The next prime is 121884493771301. The reversal of 121884493771290 is 92177394488121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121884493771279) and next prime (121884493771301).

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, 914563260 + ... + 914696520.

It is an arithmetic number, because the mean of its divisors is an integer number (2365057217088).

Almost surely, 2^{121884493771290} is an apocalyptic number.

121884493771290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121884493771290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151363661893632).

121884493771290 is an abundant number, since it is smaller than the sum of its proper divisors (180842830015974).

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

121884493771290 is a wasteful number, since it uses less digits than its factorization.

121884493771290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135796.

The product of its (nonzero) digits is 48771072, while the sum is 66.

The spelling of 121884493771290 in words is "one hundred twenty-one trillion, eight hundred eighty-four billion, four hundred ninety-three million, seven hundred seventy-one thousand, two hundred ninety".