22420211 has 6 divisors (see below), whose sum is σ = 24643836. Its totient is φ = 20381900.

The previous prime is 22420207. The next prime is 22420213. The reversal of 22420211 is 11202422.

It is not a de Polignac number, because 22420211 - 2² = 22420207 is a prime.

It is a super-2 number, since 2×22420211² = 1005331722569042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22420213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92525 + ... + 92766.

It is an arithmetic number, because the mean of its divisors is an integer number (4107306).

Almost surely, 2^22420211 is an apocalyptic number.

22420211 is a deficient number, since it is larger than the sum of its proper divisors (2223625).

22420211 is a wasteful number, since it uses less digits than its factorization.

22420211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185313 (or 185302 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22420211 is about 4734.9985216471. The cubic root of 22420211 is about 281.9767053172.

Adding to 22420211 its sum of digits (14), we get a square (22420225 = 4735²).

Adding to 22420211 its reverse (11202422), we get a palindrome (33622633).

The spelling of 22420211 in words is "twenty-two million, four hundred twenty thousand, two hundred eleven".