21101302099 has 2 divisors, whose sum is σ = 21101302100. Its totient is φ = 21101302098.

The previous prime is 21101302039. The next prime is 21101302121. The reversal of 21101302099 is 99020310112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21101302099 - 2¹³ = 21101293907 is a prime.

It is not a weakly prime, because it can be changed into another prime (21101302039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550651049 + 10550651050.

It is an arithmetic number, because the mean of its divisors is an integer number (10550651050).

Almost surely, 2^21101302099 is an apocalyptic number.

21101302099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101302099 is an equidigital number, since it uses as much as digits as its factorization.

21101302099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The spelling of 21101302099 in words is "twenty-one billion, one hundred one million, three hundred two thousand, ninety-nine".