101921079 has 8 divisors (see below), whose sum is σ = 146348272. Its totient is φ = 62720640.

The previous prime is 101921077. The next prime is 101921081. The reversal of 101921079 is 970129101.

It is an interprime number because it is at equal distance from previous prime (101921077) and next prime (101921081).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101921079 - 2¹ = 101921077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101921077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306642 + ... + 1306719.

It is an arithmetic number, because the mean of its divisors is an integer number (18293534).

Almost surely, 2^101921079 is an apocalyptic number.

101921079 is a deficient number, since it is larger than the sum of its proper divisors (44427193).

101921079 is a wasteful number, since it uses less digits than its factorization.

101921079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613377.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 101921079 is about 10095.5970105784. The cubic root of 101921079 is about 467.1123368878.

The spelling of 101921079 in words is "one hundred one million, nine hundred twenty-one thousand, seventy-nine".