121101854208 has 80 divisors (see below), whose sum is σ = 322710178560. Its totient is φ = 40356366336.

The previous prime is 121101854197. The next prime is 121101854267. The reversal of 121101854208 is 802458101121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7301541 + ... + 7318107.

It is an arithmetic number, because the mean of its divisors is an integer number (4033877232).

Almost surely, 2^121101854208 is an apocalyptic number.

It is an amenable number.

121101854208 is an abundant number, since it is smaller than the sum of its proper divisors (201608324352).

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

121101854208 is an equidigital number, since it uses as much as digits as its factorization.

121101854208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347 (or 21331 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 33.

Adding to 121101854208 its reverse (802458101121), we get a palindrome (923559955329).

The spelling of 121101854208 in words is "one hundred twenty-one billion, one hundred one million, eight hundred fifty-four thousand, two hundred eight".