2101212122099 has 2 divisors, whose sum is σ = 2101212122100. Its totient is φ = 2101212122098.

The previous prime is 2101212122077. The next prime is 2101212122137. The reversal of 2101212122099 is 9902212121012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101212122099 - 2¹² = 2101212118003 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101212122029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050606061049 + 1050606061050.

It is an arithmetic number, because the mean of its divisors is an integer number (1050606061050).

Almost surely, 2^{2101212122099} is an apocalyptic number.

2101212122099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101212122099 is an equidigital number, since it uses as much as digits as its factorization.

2101212122099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 2101212122099 in words is "two trillion, one hundred one billion, two hundred twelve million, one hundred twenty-two thousand, ninety-nine".