2101100020499 has 2 divisors, whose sum is σ = 2101100020500. Its totient is φ = 2101100020498.

The previous prime is 2101100020471. The next prime is 2101100020507. The reversal of 2101100020499 is 9940200011012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101100020499 - 2⁴⁰ = 1001588392723 is a prime.

It is a super-2 number, since 2×2101100020499² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2101100028499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050550010249 + 1050550010250.

It is an arithmetic number, because the mean of its divisors is an integer number (1050550010250).

Almost surely, 2^{2101100020499} is an apocalyptic number.

2101100020499 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101100020499 is an equidigital number, since it uses as much as digits as its factorization.

2101100020499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 2101100020499 in words is "two trillion, one hundred one billion, one hundred million, twenty thousand, four hundred ninety-nine".