22012101 has 16 divisors (see below), whose sum is σ = 32685120. Its totient is φ = 14641200.

The previous prime is 22012099. The next prime is 22012117. The reversal of 22012101 is 10121022.

It is not a de Polignac number, because 22012101 - 2¹ = 22012099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012141) 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 15 ways as a sum of consecutive naturals, for example, 18346 + ... + 19508.

It is an arithmetic number, because the mean of its divisors is an integer number (2042820).

Almost surely, 2^22012101 is an apocalyptic number.

It is an amenable number.

22012101 is a deficient number, since it is larger than the sum of its proper divisors (10673019).

22012101 is a wasteful number, since it uses less digits than its factorization.

22012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 22012101 is about 4691.7055534208. The cubic root of 22012101 is about 280.2552986155.

Adding to 22012101 its reverse (10121022), we get a palindrome (32133123).

It can be divided in two parts, 220 and 12101, that added together give a palindrome (12321).

The spelling of 22012101 in words is "twenty-two million, twelve thousand, one hundred one".