22101387 has 32 divisors (see below), whose sum is σ = 36985344. Its totient is φ = 11404800.

The previous prime is 22101349. The next prime is 22101433. The reversal of 22101387 is 78310122.

It is not a de Polignac number, because 22101387 - 2¹¹ = 22099339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22101347) 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 31 ways as a sum of consecutive naturals, for example, 55473 + ... + 55869.

It is an arithmetic number, because the mean of its divisors is an integer number (1155792).

Almost surely, 2^22101387 is an apocalyptic number.

22101387 is a deficient number, since it is larger than the sum of its proper divisors (14883957).

22101387 is a wasteful number, since it uses less digits than its factorization.

22101387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 22101387 is about 4701.2112269074. The cubic root of 22101387 is about 280.6337134676.

The spelling of 22101387 in words is "twenty-two million, one hundred one thousand, three hundred eighty-seven".