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20222212 = 2243117571
BaseRepresentation
bin100110100100…
…1000100000100
31102001101122211
41031021010010
520134102322
62001233204
7333612613
oct115110404
942041584
1020222212
111046227a
126932804
13426060a
14298587a
151b96b77
hex1349104

20222212 has 12 divisors (see below), whose sum is σ = 36212176. Its totient is φ = 9875880.

The previous prime is 20222207. The next prime is 20222219. The reversal of 20222212 is 21222202.

It is a junction number, because it is equal to n+sod(n) for n = 20222192 and 20222201.

It is not an unprimeable number, because it can be changed into a prime (20222219) 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, 58614 + ... + 58957.

Almost surely, 220222212 is an apocalyptic number.

It is an amenable number.

20222212 is a deficient number, since it is larger than the sum of its proper divisors (15989964).

20222212 is a wasteful number, since it uses less digits than its factorization.

20222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117618 (or 117616 counting only the distinct ones).

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

The square root of 20222212 is about 4496.9113844949. The cubic root of 20222212 is about 272.4433549459.

Adding to 20222212 its reverse (21222202), we get a palindrome (41444414).

The spelling of 20222212 in words is "twenty million, two hundred twenty-two thousand, two hundred twelve".

Divisors: 1 2 4 43 86 172 117571 235142 470284 5055553 10111106 20222212