101840371721 has 8 divisors (see below), whose sum is σ = 111141497088. Its totient is φ = 92546398000.

The previous prime is 101840371679. The next prime is 101840371747. The reversal of 101840371721 is 127173048101.

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

It is a cyclic number.

It is not a de Polignac number, because 101840371721 - 2⁶ = 101840371657 is a prime.

It is a super-2 number, since 2×101840371721² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101840371781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1758110 + ... + 1815111.

It is an arithmetic number, because the mean of its divisors is an integer number (13892687136).

Almost surely, 2^101840371721 is an apocalyptic number.

101840371721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101840371721 is a deficient number, since it is larger than the sum of its proper divisors (9301125367).

101840371721 is a wasteful number, since it uses less digits than its factorization.

101840371721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575823.

The product of its (nonzero) digits is 9408, while the sum is 35.

The spelling of 101840371721 in words is "one hundred one billion, eight hundred forty million, three hundred seventy-one thousand, seven hundred twenty-one".