22150201 has 4 divisors (see below), whose sum is σ = 23453172. Its totient is φ = 20847232.

The previous prime is 22150187. The next prime is 22150211. The reversal of 22150201 is 10205122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10205122 = 2 ⋅5102561.

It can be written as a sum of positive squares in 2 ways, for example, as 14175225 + 7974976 = 3765^2 + 2824^2 .

It is a cyclic number.

It is not a de Polignac number, because 22150201 - 2⁵ = 22150169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22150211) 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, 651460 + ... + 651493.

It is an arithmetic number, because the mean of its divisors is an integer number (5863293).

Almost surely, 2^22150201 is an apocalyptic number.

It is an amenable number.

22150201 is a deficient number, since it is larger than the sum of its proper divisors (1302971).

22150201 is a wasteful number, since it uses less digits than its factorization.

22150201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302970.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 22150201 is about 4706.4000042495. The cubic root of 22150201 is about 280.8401677981.

Adding to 22150201 its reverse (10205122), we get a palindrome (32355323).

The spelling of 22150201 in words is "twenty-two million, one hundred fifty thousand, two hundred one".