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22120222 = 225494339
BaseRepresentation
bin101010001100…
…0011100011110
31112121211020111
41110120130132
521130321342
62110040234
7356006305
oct124303436
945554214
1022120222
1111539283
1274a907a
1347764b7
142d1b43c
151e1e217
hex151871e

22120222 has 8 divisors (see below), whose sum is σ = 33201000. Its totient is φ = 11053224.

The previous prime is 22120193. The next prime is 22120223. The reversal of 22120222 is 22202122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120223) 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, 2929 + ... + 7267.

It is an arithmetic number, because the mean of its divisors is an integer number (4150125).

Almost surely, 222120222 is an apocalyptic number.

22120222 is a deficient number, since it is larger than the sum of its proper divisors (11080778).

22120222 is a wasteful number, since it uses less digits than its factorization.

22120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22120222 is about 4703.2140074634. The cubic root of 22120222 is about 280.7134103540.

Adding to 22120222 its reverse (22202122), we get a palindrome (44322344).

The spelling of 22120222 in words is "twenty-two million, one hundred twenty thousand, two hundred twenty-two".

Divisors: 1 2 2549 4339 5098 8678 11060111 22120222