22261971 has 8 divisors (see below), whose sum is σ = 29837200. Its totient is φ = 14764032.

The previous prime is 22261969. The next prime is 22261991. The reversal of 22261971 is 17916222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22261971 - 2¹ = 22261969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22261951) 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 7 ways as a sum of consecutive naturals, for example, 18646 + ... + 19803.

It is an arithmetic number, because the mean of its divisors is an integer number (3729650).

Almost surely, 2^22261971 is an apocalyptic number.

22261971 is a deficient number, since it is larger than the sum of its proper divisors (7575229).

22261971 is a wasteful number, since it uses less digits than its factorization.

22261971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38645.

The product of its digits is 3024, while the sum is 30.

The square root of 22261971 is about 4718.2593188590. The cubic root of 22261971 is about 281.3117490098.

It can be divided in two parts, 22261 and 971, that added together give a palindrome (23232).

The spelling of 22261971 in words is "twenty-two million, two hundred sixty-one thousand, nine hundred seventy-one".