121220111220194 has 32 divisors (see below), whose sum is σ = 212901442554240. Its totient is φ = 50680578678912.

The previous prime is 121220111220193. The next prime is 121220111220199. The reversal of 121220111220194 is 491022111022121.

It is not an unprimeable number, because it can be changed into a prime (121220111220193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123964349 + ... + 124938384.

It is an arithmetic number, because the mean of its divisors is an integer number (6653170079820).

Almost surely, 2^{121220111220194} is an apocalyptic number.

121220111220194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121220111220194 is a deficient number, since it is larger than the sum of its proper divisors (91681331334046).

121220111220194 is a wasteful number, since it uses less digits than its factorization.

121220111220194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248903594.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 121220111220194 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, one hundred ninety-four".