2121092993 has 4 divisors (see below), whose sum is σ = 2140916400. Its totient is φ = 2101269588.

The previous prime is 2121092977. The next prime is 2121092999. The reversal of 2121092993 is 3992901212.

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 2121092993 - 2⁴ = 2121092977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121092999) 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, 9911543 + ... + 9911756.

It is an arithmetic number, because the mean of its divisors is an integer number (535229100).

Almost surely, 2^2121092993 is an apocalyptic number.

It is an amenable number.

2121092993 is a deficient number, since it is larger than the sum of its proper divisors (19823407).

2121092993 is a wasteful number, since it uses less digits than its factorization.

2121092993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19823406.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 2121092993 is about 46055.3253489757. The cubic root of 2121092993 is about 1284.8523891872.

The spelling of 2121092993 in words is "two billion, one hundred twenty-one million, ninety-two thousand, nine hundred ninety-three".