107201621 has 4 divisors (see below), whose sum is σ = 107275392. Its totient is φ = 107127852.

The previous prime is 107201599. The next prime is 107201651. The reversal of 107201621 is 126102701.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126102701 = 29 ⋅4348369.

It is a cyclic number.

It is not a de Polignac number, because 107201621 - 2¹⁸ = 106939477 is a prime.

It is a super-2 number, since 2×107201621² = 22984375090055282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 107201593 and 107201602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107201651) 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 3 ways as a sum of consecutive naturals, for example, 34661 + ... + 37626.

It is an arithmetic number, because the mean of its divisors is an integer number (26818848).

Almost surely, 2^107201621 is an apocalyptic number.

It is an amenable number.

107201621 is a deficient number, since it is larger than the sum of its proper divisors (73771).

107201621 is an equidigital number, since it uses as much as digits as its factorization.

107201621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73770.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 107201621 is about 10353.8215650068. The cubic root of 107201621 is about 475.0439420105.

The spelling of 107201621 in words is "one hundred seven million, two hundred one thousand, six hundred twenty-one".