100021699 has 2 divisors, whose sum is σ = 100021700. Its totient is φ = 100021698.

The previous prime is 100021679. The next prime is 100021711. The reversal of 100021699 is 996120001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100021699 - 2¹⁷ = 99890627 is a prime.

It is a super-3 number, since 3×100021699³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (100021679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010849 + 50010850.

It is an arithmetic number, because the mean of its divisors is an integer number (50010850).

Almost surely, 2^100021699 is an apocalyptic number.

100021699 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021699 is an equidigital number, since it uses as much as digits as its factorization.

100021699 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 square root of 100021699 is about 10001.0848911506. The cubic root of 100021699 is about 464.1924535453.

The spelling of 100021699 in words is "one hundred million, twenty-one thousand, six hundred ninety-nine".