121210221020099 has 2 divisors, whose sum is σ = 121210221020100. Its totient is φ = 121210221020098.

The previous prime is 121210221019991. The next prime is 121210221020101. The reversal of 121210221020099 is 990020122012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121210221020099 - 2⁸ = 121210221019843 is a prime.

Together with 121210221020101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121210221020599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605110510049 + 60605110510050.

It is an arithmetic number, because the mean of its divisors is an integer number (60605110510050).

Almost surely, 2^{121210221020099} is an apocalyptic number.

121210221020099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210221020099 is an equidigital number, since it uses as much as digits as its factorization.

121210221020099 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 121210221020099 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred twenty-one million, twenty thousand, ninety-nine".