121101993 has 16 divisors (see below), whose sum is σ = 180828160. Its totient is φ = 80096688.

The previous prime is 121101989. The next prime is 121101997. The reversal of 121101993 is 399101121.

It is an interprime number because it is at equal distance from previous prime (121101989) and next prime (121101997).

It is not a de Polignac number, because 121101993 - 2² = 121101989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121101997) 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, 14230 + ... + 21087.

It is an arithmetic number, because the mean of its divisors is an integer number (11301760).

Almost surely, 2^121101993 is an apocalyptic number.

It is an amenable number.

121101993 is a deficient number, since it is larger than the sum of its proper divisors (59726167).

121101993 is a wasteful number, since it uses less digits than its factorization.

121101993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35453 (or 35447 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 121101993 is about 11004.6350689153. The cubic root of 121101993 is about 494.7476767276.

The spelling of 121101993 in words is "one hundred twenty-one million, one hundred one thousand, nine hundred ninety-three".