123021203099 has 2 divisors, whose sum is σ = 123021203100. Its totient is φ = 123021203098.

The previous prime is 123021203093. The next prime is 123021203113. The reversal of 123021203099 is 990302120321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123021203099 - 2¹⁶ = 123021137563 is a prime.

It is not a weakly prime, because it can be changed into another prime (123021203093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510601549 + 61510601550.

It is an arithmetic number, because the mean of its divisors is an integer number (61510601550).

Almost surely, 2^123021203099 is an apocalyptic number.

123021203099 is a deficient number, since it is larger than the sum of its proper divisors (1).

123021203099 is an equidigital number, since it uses as much as digits as its factorization.

123021203099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 123021203099 in words is "one hundred twenty-three billion, twenty-one million, two hundred three thousand, ninety-nine".