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20012222 = 210006111
BaseRepresentation
bin100110001010…
…1110010111110
31101122201121102
41030111302332
520110342342
61552533102
7332046446
oct114256276
941581542
1020012222
111032952a
126851192
1341b8b69
14292d126
151b54832
hex1315cbe

20012222 has 4 divisors (see below), whose sum is σ = 30018336. Its totient is φ = 10006110.

The previous prime is 20012219. The next prime is 20012261. The reversal of 20012222 is 22221002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22221002 = 211110501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003054 + ... + 5003057.

It is an arithmetic number, because the mean of its divisors is an integer number (7504584).

Almost surely, 220012222 is an apocalyptic number.

20012222 is a deficient number, since it is larger than the sum of its proper divisors (10006114).

20012222 is a wasteful number, since it uses less digits than its factorization.

20012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006113.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20012222 is about 4473.5022074433. The cubic root of 20012222 is about 271.4970430870.

Adding to 20012222 its reverse (22221002), we get a palindrome (42233224).

The spelling of 20012222 in words is "twenty million, twelve thousand, two hundred twenty-two".

Divisors: 1 2 10006111 20012222