22131770 has 16 divisors (see below), whose sum is σ = 41934240. Its totient is φ = 8386704.

The previous prime is 22131761. The next prime is 22131779. The reversal of 22131770 is 7713122.

It is an interprime number because it is at equal distance from previous prime (22131761) and next prime (22131779).

It is not an unprimeable number, because it can be changed into a prime (22131779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58052 + ... + 58431.

It is an arithmetic number, because the mean of its divisors is an integer number (2620890).

Almost surely, 2^22131770 is an apocalyptic number.

22131770 is a deficient number, since it is larger than the sum of its proper divisors (19802470).

22131770 is a wasteful number, since it uses less digits than its factorization.

22131770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116509.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 22131770 is about 4704.4415183951. The cubic root of 22131770 is about 280.7622512519.

Adding to 22131770 its reverse (7713122), we get a palindrome (29844892).

The spelling of 22131770 in words is "twenty-two million, one hundred thirty-one thousand, seven hundred seventy".