201416621 has 4 divisors (see below), whose sum is σ = 230190432. Its totient is φ = 172642812.

The previous prime is 201416609. The next prime is 201416623. The reversal of 201416621 is 126614102.

201416621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 201416621 - 2¹⁴ = 201400237 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 (201416623) 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, 14386895 + ... + 14386908.

It is an arithmetic number, because the mean of its divisors is an integer number (57547608).

Almost surely, 2^201416621 is an apocalyptic number.

It is an amenable number.

201416621 is a deficient number, since it is larger than the sum of its proper divisors (28773811).

201416621 is an equidigital number, since it uses as much as digits as its factorization.

201416621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28773810.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 201416621 is about 14192.1323626860. The cubic root of 201416621 is about 586.1810420753.

It can be divided in two parts, 20141 and 6621, that added together give a palindrome (26762).

The spelling of 201416621 in words is "two hundred one million, four hundred sixteen thousand, six hundred twenty-one".