20121201010099 has 4 divisors (see below), whose sum is σ = 22995658297264. Its totient is φ = 17246743722936.

The previous prime is 20121201010093. The next prime is 20121201010111. The reversal of 20121201010099 is 99001010212102.

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

It is not a de Polignac number, because 20121201010099 - 2³ = 20121201010091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121201010091) 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, 1437228643572 + ... + 1437228643585.

It is an arithmetic number, because the mean of its divisors is an integer number (5748914574316).

Almost surely, 2^{20121201010099} is an apocalyptic number.

20121201010099 is a deficient number, since it is larger than the sum of its proper divisors (2874457287165).

20121201010099 is an equidigital number, since it uses as much as digits as its factorization.

20121201010099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874457287164.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 20121201010099 in words is "twenty trillion, one hundred twenty-one billion, two hundred one million, ten thousand, ninety-nine".