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1222031 = 2942139
BaseRepresentation
bin100101010010110001111
32022002022102
410222112033
5303101111
642105315
713246526
oct4522617
92262272
101222031
11765148
124ab23b
1333a2c5
1423b4bd
1519213b
hex12a58f

1222031 has 4 divisors (see below), whose sum is σ = 1264200. Its totient is φ = 1179864.

The previous prime is 1222027. The next prime is 1222037. The reversal of 1222031 is 1302221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222031 - 22 = 1222027 is a prime.

It is a super-2 number, since 2×12220312 = 2986719529922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21041 + ... + 21098.

It is an arithmetic number, because the mean of its divisors is an integer number (316050).

21222031 is an apocalyptic number.

1222031 is a deficient number, since it is larger than the sum of its proper divisors (42169).

1222031 is an equidigital number, since it uses as much as digits as its factorization.

1222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42168.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1222031 is about 1105.4551098982. The cubic root of 1222031 is about 106.9122347832.

Adding to 1222031 its reverse (1302221), we get a palindrome (2524252).

The spelling of 1222031 in words is "one million, two hundred twenty-two thousand, thirty-one".

Divisors: 1 29 42139 1222031