100000021971139 has 2 divisors, whose sum is σ = 100000021971140. Its totient is φ = 100000021971138.

The previous prime is 100000021971121. The next prime is 100000021971163. The reversal of 100000021971139 is 931179120000001.

It is a weak prime.

It is an emirp because it is prime and its reverse (931179120000001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100000021971139 - 2⁷ = 100000021971011 is a prime.

It is not a weakly prime, because it can be changed into another prime (100000021971169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000010985569 + 50000010985570.

It is an arithmetic number, because the mean of its divisors is an integer number (50000010985570).

Almost surely, 2^{100000021971139} is an apocalyptic number.

100000021971139 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000021971139 is an equidigital number, since it uses as much as digits as its factorization.

100000021971139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 34.

The spelling of 100000021971139 in words is "one hundred trillion, twenty-one million, nine hundred seventy-one thousand, one hundred thirty-nine".