20121002102199 has 16 divisors (see below), whose sum is σ = 27621794953440. Its totient is φ = 13018913510400.

The previous prime is 20121002102183. The next prime is 20121002102203. The reversal of 20121002102199 is 99120120012102.

It is not a de Polignac number, because 20121002102199 - 2⁴ = 20121002102183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121002102899) 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, 225978294 + ... + 226067315.

It is an arithmetic number, because the mean of its divisors is an integer number (1726362184590).

Almost surely, 2^{20121002102199} is an apocalyptic number.

20121002102199 is a deficient number, since it is larger than the sum of its proper divisors (7500792851241).

20121002102199 is a wasteful number, since it uses less digits than its factorization.

20121002102199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452046050.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 20121002102199 in words is "twenty trillion, one hundred twenty-one billion, two million, one hundred two thousand, one hundred ninety-nine".