22140351 has 16 divisors (see below), whose sum is σ = 33292800. Its totient is φ = 14538744.

The previous prime is 22140343. The next prime is 22140353. The reversal of 22140351 is 15304122.

It is not a de Polignac number, because 22140351 - 2³ = 22140343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140353) 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, 4311 + ... + 7928.

It is an arithmetic number, because the mean of its divisors is an integer number (2080800).

Almost surely, 2^22140351 is an apocalyptic number.

22140351 is a deficient number, since it is larger than the sum of its proper divisors (11152449).

22140351 is a wasteful number, since it uses less digits than its factorization.

22140351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12315 (or 12309 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22140351 is about 4705.3534404973. The cubic root of 22140351 is about 280.7985325732.

Adding to 22140351 its reverse (15304122), we get a palindrome (37444473).

The spelling of 22140351 in words is "twenty-two million, one hundred forty thousand, three hundred fifty-one".