121010101993 has 8 divisors (see below), whose sum is σ = 132164710560. Its totient is φ = 109881108480.

The previous prime is 121010101957. The next prime is 121010102011. The reversal of 121010101993 is 399101010121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121010101993 - 2²¹ = 121008004841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121010101903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6393880 + ... + 6412777.

It is an arithmetic number, because the mean of its divisors is an integer number (16520588820).

Almost surely, 2^121010101993 is an apocalyptic number.

It is an amenable number.

121010101993 is a deficient number, since it is larger than the sum of its proper divisors (11154608567).

121010101993 is a wasteful number, since it uses less digits than its factorization.

121010101993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12807527.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 121010101993 in words is "one hundred twenty-one billion, ten million, one hundred one thousand, nine hundred ninety-three".