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2121222 = 233491013
BaseRepresentation
bin1000000101111000000110
310222202202210
420011320012
51020334342
6113244250
724013215
oct10057006
93882683
102121222
111219784
12863686
1359367c
143d307c
152bd79c
hex205e06

2121222 has 16 divisors (see below), whose sum is σ = 4258800. Its totient is φ = 704352.

The previous prime is 2121199. The next prime is 2121239. The reversal of 2121222 is 2221212.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2121198 and 2121207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588 + ... + 2600.

It is an arithmetic number, because the mean of its divisors is an integer number (266175).

22121222 is an apocalyptic number.

2121222 is an abundant number, since it is smaller than the sum of its proper divisors (2137578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121222 is a wasteful number, since it uses less digits than its factorization.

2121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367.

The product of its digits is 32, while the sum is 12.

The square root of 2121222 is about 1456.4415539252. The cubic root of 2121222 is about 128.4878437329.

Adding to 2121222 its reverse (2221212), we get a palindrome (4342434).

It can be divided in two parts, 21212 and 22, that multiplied together give a palindrome (466664).

The spelling of 2121222 in words is "two million, one hundred twenty-one thousand, two hundred twenty-two".

Divisors: 1 2 3 6 349 698 1013 1047 2026 2094 3039 6078 353537 707074 1060611 2121222