20121002010199 has 2 divisors, whose sum is σ = 20121002010200. Its totient is φ = 20121002010198.

The previous prime is 20121002010071. The next prime is 20121002010247. The reversal of 20121002010199 is 99101020012102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20121002010199 - 2⁷ = 20121002010071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121002010799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060501005099 + 10060501005100.

It is an arithmetic number, because the mean of its divisors is an integer number (10060501005100).

Almost surely, 2^{20121002010199} is an apocalyptic number.

20121002010199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121002010199 is an equidigital number, since it uses as much as digits as its factorization.

20121002010199 is an evil number, because the sum of its binary digits is even.

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

The spelling of 20121002010199 in words is "twenty trillion, one hundred twenty-one billion, two million, ten thousand, one hundred ninety-nine".