22101201 has 16 divisors (see below), whose sum is σ = 32854720. Its totient is φ = 14683680.

The previous prime is 22101193. The next prime is 22101239. The reversal of 22101201 is 10210122.

It is not a de Polignac number, because 22101201 - 2³ = 22101193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22101271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7701 + ... + 10173.

It is an arithmetic number, because the mean of its divisors is an integer number (2053420).

Almost surely, 2^22101201 is an apocalyptic number.

It is an amenable number.

22101201 is a deficient number, since it is larger than the sum of its proper divisors (10753519).

22101201 is a wasteful number, since it uses less digits than its factorization.

22101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 22101201 is about 4701.1914447297. The cubic root of 22101201 is about 280.6329262166.

Adding to 22101201 its reverse (10210122), we get a palindrome (32311323).

The spelling of 22101201 in words is "twenty-two million, one hundred one thousand, two hundred one".