121009193 has 4 divisors (see below), whose sum is σ = 121469568. Its totient is φ = 120548820.

The previous prime is 121009183. The next prime is 121009201. The reversal of 121009193 is 391900121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121009193 - 2¹² = 121005097 is a prime.

It is a super-2 number, since 2×121009193² = 29286449581022498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121009153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229793 + ... + 230318.

It is an arithmetic number, because the mean of its divisors is an integer number (30367392).

Almost surely, 2^121009193 is an apocalyptic number.

It is an amenable number.

121009193 is a deficient number, since it is larger than the sum of its proper divisors (460375).

121009193 is an equidigital number, since it uses as much as digits as its factorization.

121009193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460374.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 121009193 is about 11000.4178556998. The cubic root of 121009193 is about 494.6212700082.

The spelling of 121009193 in words is "one hundred twenty-one million, nine thousand, one hundred ninety-three".