121901393 has 4 divisors (see below), whose sum is σ = 125833728. Its totient is φ = 117969060.

The previous prime is 121901371. The next prime is 121901419. The reversal of 121901393 is 393109121.

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 121901393 - 2¹⁴ = 121885009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121901333) 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, 1966121 + ... + 1966182.

It is an arithmetic number, because the mean of its divisors is an integer number (31458432).

Almost surely, 2^121901393 is an apocalyptic number.

It is an amenable number.

121901393 is a deficient number, since it is larger than the sum of its proper divisors (3932335).

121901393 is an equidigital number, since it uses as much as digits as its factorization.

121901393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932334.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 121901393 is about 11040.8963857107. The cubic root of 121901393 is about 495.8339077617.

The spelling of 121901393 in words is "one hundred twenty-one million, nine hundred one thousand, three hundred ninety-three".