102121121202099 has 4 divisors (see below), whose sum is σ = 136161494936136. Its totient is φ = 68080747468064.

The previous prime is 102121121201947. The next prime is 102121121202119. The reversal of 102121121202099 is 990202121121201.

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

It is a cyclic number.

It is not a de Polignac number, because 102121121202099 - 2⁹ = 102121121201587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102121121002099) 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, 17020186867014 + ... + 17020186867019.

It is an arithmetic number, because the mean of its divisors is an integer number (34040373734034).

Almost surely, 2^{102121121202099} is an apocalyptic number.

102121121202099 is a deficient number, since it is larger than the sum of its proper divisors (34040373734037).

102121121202099 is an equidigital number, since it uses as much as digits as its factorization.

102121121202099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040373734036.

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 102121121202099 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred two thousand, ninety-nine".