2121101983683 has 10 divisors (see below), whose sum is σ = 3168559753524. Its totient is φ = 1414067989068.

The previous prime is 2121101983613. The next prime is 2121101983733. The reversal of 2121101983683 is 3863891011212.

It is not a de Polignac number, because 2121101983683 - 2¹³ = 2121101975491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121101983603) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13093222041 + ... + 13093222202.

Almost surely, 2^{2121101983683} is an apocalyptic number.

2121101983683 is a deficient number, since it is larger than the sum of its proper divisors (1047457769841).

2121101983683 is an equidigital number, since it uses as much as digits as its factorization.

2121101983683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26186444255 (or 26186444246 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

Adding to 2121101983683 its reverse (3863891011212), we get a palindrome (5984992994895).

The spelling of 2121101983683 in words is "two trillion, one hundred twenty-one billion, one hundred one million, nine hundred eighty-three thousand, six hundred eighty-three".