2120911909203 has 4 divisors (see below), whose sum is σ = 2827882545608. Its totient is φ = 1413941272800.

The previous prime is 2120911909157. The next prime is 2120911909313. The reversal of 2120911909203 is 3029091190212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2120911909203 - 2¹⁰ = 2120911908179 is a prime.

It is a super-2 number, since 2×2120911909203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120911949203) 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, 353485318198 + ... + 353485318203.

It is an arithmetic number, because the mean of its divisors is an integer number (706970636402).

Almost surely, 2^{2120911909203} is an apocalyptic number.

2120911909203 is a deficient number, since it is larger than the sum of its proper divisors (706970636405).

2120911909203 is an equidigital number, since it uses as much as digits as its factorization.

2120911909203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706970636404.

The product of its (nonzero) digits is 17496, while the sum is 39.

The spelling of 2120911909203 in words is "two trillion, one hundred twenty billion, nine hundred eleven million, nine hundred nine thousand, two hundred three".