21133401009899 has 2 divisors, whose sum is σ = 21133401009900. Its totient is φ = 21133401009898.

The previous prime is 21133401009881. The next prime is 21133401010019. The reversal of 21133401009899 is 99890010433112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21133401009899 is a prime.

It is not a weakly prime, because it can be changed into another prime (21133401009869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566700504949 + 10566700504950.

It is an arithmetic number, because the mean of its divisors is an integer number (10566700504950).

Almost surely, 2^{21133401009899} is an apocalyptic number.

21133401009899 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133401009899 is an equidigital number, since it uses as much as digits as its factorization.

21133401009899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 21133401009899 in words is "twenty-one trillion, one hundred thirty-three billion, four hundred one million, nine thousand, eight hundred ninety-nine".