121367666190 has 64 divisors (see below), whose sum is σ = 297599671296. Its totient is φ = 31663347072.

The previous prime is 121367666149. The next prime is 121367666191. The reversal of 121367666190 is 91666763121.

It is a super-2 number, since 2×121367666190² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121367666191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3781149 + ... + 3813111.

It is an arithmetic number, because the mean of its divisors is an integer number (4649994864).

Almost surely, 2^121367666190 is an apocalyptic number.

121367666190 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 121367666190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148799835648).

121367666190 is an abundant number, since it is smaller than the sum of its proper divisors (176232005106).

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

121367666190 is a wasteful number, since it uses less digits than its factorization.

121367666190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34713.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 121367666190 in words is "one hundred twenty-one billion, three hundred sixty-seven million, six hundred sixty-six thousand, one hundred ninety".