105422921 has 2 divisors, whose sum is σ = 105422922. Its totient is φ = 105422920.

The previous prime is 105422897. The next prime is 105422923. The reversal of 105422921 is 129224501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71910400 + 33512521 = 8480^2 + 5789^2 .

It is a cyclic number.

It is not a de Polignac number, because 105422921 - 2⁶ = 105422857 is a prime.

It is a super-2 number, since 2×105422921² = 22227984544344482, which contains 22 as substring.

Together with 105422923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105422923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52711460 + 52711461.

It is an arithmetic number, because the mean of its divisors is an integer number (52711461).

Almost surely, 2^105422921 is an apocalyptic number.

It is an amenable number.

105422921 is a deficient number, since it is larger than the sum of its proper divisors (1).

105422921 is an equidigital number, since it uses as much as digits as its factorization.

105422921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 105422921 is about 10267.5664594879. The cubic root of 105422921 is about 472.4019501110.

The spelling of 105422921 in words is "one hundred five million, four hundred twenty-two thousand, nine hundred twenty-one".