1212100099975 has 24 divisors (see below), whose sum is σ = 1552191403392. Its totient is φ = 937974710400.

The previous prime is 1212100099921. The next prime is 1212100099997. The reversal of 1212100099975 is 5799900012121.

It is not a de Polignac number, because 1212100099975 - 2¹¹ = 1212100097927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1361709 + ... + 2068441.

It is an arithmetic number, because the mean of its divisors is an integer number (64674641808).

Almost surely, 2^{1212100099975} is an apocalyptic number.

1212100099975 is a deficient number, since it is larger than the sum of its proper divisors (340091303417).

1212100099975 is a wasteful number, since it uses less digits than its factorization.

1212100099975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708987 (or 708982 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 46.

The spelling of 1212100099975 in words is "one trillion, two hundred twelve billion, one hundred million, ninety-nine thousand, nine hundred seventy-five".