2121011100983 has 16 divisors (see below), whose sum is σ = 2196472204800. Its totient is φ = 2045705837280.

The previous prime is 2121011100931. The next prime is 2121011101021. The reversal of 2121011100983 is 3890011101212.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121011100983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121011100283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185868548 + ... + 185879958.

It is an arithmetic number, because the mean of its divisors is an integer number (137279512800).

Almost surely, 2^{2121011100983} is an apocalyptic number.

2121011100983 is a deficient number, since it is larger than the sum of its proper divisors (75461103817).

2121011100983 is a wasteful number, since it uses less digits than its factorization.

2121011100983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17662.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 2121011100983 in words is "two trillion, one hundred twenty-one billion, eleven million, one hundred thousand, nine hundred eighty-three".