2121201109983 has 4 divisors (see below), whose sum is σ = 2828268146648. Its totient is φ = 1414134073320.

The previous prime is 2121201109981. The next prime is 2121201110051. The reversal of 2121201109983 is 3899011021212.

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

It is not a de Polignac number, because 2121201109983 - 2¹ = 2121201109981 is a prime.

It is a super-2 number, since 2×2121201109983² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121201109981) 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, 353533518328 + ... + 353533518333.

It is an arithmetic number, because the mean of its divisors is an integer number (707067036662).

Almost surely, 2^{2121201109983} is an apocalyptic number.

2121201109983 is a deficient number, since it is larger than the sum of its proper divisors (707067036665).

2121201109983 is an equidigital number, since it uses as much as digits as its factorization.

2121201109983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707067036664.

The product of its (nonzero) digits is 15552, while the sum is 39.

The spelling of 2121201109983 in words is "two trillion, one hundred twenty-one billion, two hundred one million, one hundred nine thousand, nine hundred eighty-three".