2121000099976 has 32 divisors (see below), whose sum is σ = 4049481512160. Its totient is φ = 1041295139712.

The previous prime is 2121000099961. The next prime is 2121000099991. The reversal of 2121000099976 is 6799900001212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2121000099961) and next prime (2121000099991).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9690165 + ... + 9906628.

It is an arithmetic number, because the mean of its divisors is an integer number (126546297255).

Almost surely, 2^{2121000099976} is an apocalyptic number.

It is an amenable number.

2121000099976 is a deficient number, since it is larger than the sum of its proper divisors (1928481412184).

2121000099976 is a wasteful number, since it uses less digits than its factorization.

2121000099976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19597045 (or 19597041 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 2121000099976 in words is "two trillion, one hundred twenty-one billion, ninety-nine thousand, nine hundred seventy-six".