107721901 has 4 divisors (see below), whose sum is σ = 123110752. Its totient is φ = 92333052.

The previous prime is 107721881. The next prime is 107721937. The reversal of 107721901 is 109127701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 107721901 - 2⁹ = 107721389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 107721901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107721961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7694415 + ... + 7694428.

It is an arithmetic number, because the mean of its divisors is an integer number (30777688).

Almost surely, 2^107721901 is an apocalyptic number.

It is an amenable number.

107721901 is a deficient number, since it is larger than the sum of its proper divisors (15388851).

107721901 is an equidigital number, since it uses as much as digits as its factorization.

107721901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388850.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 107721901 is about 10378.9161765572. The cubic root of 107721901 is about 475.8112099404.

The spelling of 107721901 in words is "one hundred seven million, seven hundred twenty-one thousand, nine hundred one".