22106402 has 4 divisors (see below), whose sum is σ = 33159606. Its totient is φ = 11053200.

The previous prime is 22106401. The next prime is 22106407. The reversal of 22106402 is 20460122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20460122 = 2 ⋅10230061.

It can be written as a sum of positive squares in only one way, i.e., 11485321 + 10621081 = 3389^2 + 3259^2 .

It is not an unprimeable number, because it can be changed into a prime (22106401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5526599 + ... + 5526602.

Almost surely, 2^22106402 is an apocalyptic number.

22106402 is a deficient number, since it is larger than the sum of its proper divisors (11053204).

22106402 is a wasteful number, since it uses less digits than its factorization.

22106402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11053203.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22106402 is about 4701.7445698379. The cubic root of 22106402 is about 280.6549379521.

Adding to 22106402 its reverse (20460122), we get a palindrome (42566524).

The spelling of 22106402 in words is "twenty-two million, one hundred six thousand, four hundred two".