21202103099 has 2 divisors, whose sum is σ = 21202103100. Its totient is φ = 21202103098.

The previous prime is 21202103089. The next prime is 21202103107. The reversal of 21202103099 is 99030120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202103099 - 2¹² = 21202099003 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202103089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601051549 + 10601051550.

It is an arithmetic number, because the mean of its divisors is an integer number (10601051550).

Almost surely, 2^21202103099 is an apocalyptic number.

21202103099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202103099 is an equidigital number, since it uses as much as digits as its factorization.

21202103099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 21202103099 in words is "twenty-one billion, two hundred two million, one hundred three thousand, ninety-nine".