121071766620 has 144 divisors (see below), whose sum is σ = 394531966080. Its totient is φ = 27660640896.

The previous prime is 121071766603. The next prime is 121071766661. The reversal of 121071766620 is 26667170121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7221087 + ... + 7237833.

It is an arithmetic number, because the mean of its divisors is an integer number (2739805320).

Almost surely, 2^121071766620 is an apocalyptic number.

121071766620 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 121071766620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197265983040).

121071766620 is an abundant number, since it is smaller than the sum of its proper divisors (273460199460).

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

121071766620 is a wasteful number, since it uses less digits than its factorization.

121071766620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19232 (or 19223 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 121071766620 in words is "one hundred twenty-one billion, seventy-one million, seven hundred sixty-six thousand, six hundred twenty".