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22121133 = 37373711
BaseRepresentation
bin101010001100…
…0101010101101
31112121212111020
41110120222231
521130334013
62110044353
7356012046
oct124305255
945555436
1022121133
1111539a31
1274a96b9
134776a38
142d1b8cd
151e1e623
hex1518aad

22121133 has 4 divisors (see below), whose sum is σ = 29494848. Its totient is φ = 14747420.

The previous prime is 22121089. The next prime is 22121137. The reversal of 22121133 is 33112122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22121133 - 212 = 22117037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3686853 + ... + 3686858.

It is an arithmetic number, because the mean of its divisors is an integer number (7373712).

Almost surely, 222121133 is an apocalyptic number.

It is an amenable number.

22121133 is a deficient number, since it is larger than the sum of its proper divisors (7373715).

22121133 is an equidigital number, since it uses as much as digits as its factorization.

22121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373714.

The product of its digits is 72, while the sum is 15.

The square root of 22121133 is about 4703.3108551317. The cubic root of 22121133 is about 280.7172639381.

Adding to 22121133 its reverse (33112122), we get a palindrome (55233255).

The spelling of 22121133 in words is "twenty-two million, one hundred twenty-one thousand, one hundred thirty-three".

Divisors: 1 3 7373711 22121133