1023212 has 6 divisors (see below), whose sum is σ = 1790628.
Its totient is φ = 511604.
The previous prime is 1023203. The next prime is 1023221. The reversal of 1023212 is 2123201.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (1023203) and next prime (1023221).
It is a junction number, because it is equal to n+sod(n) for n = 1023193 and 1023202.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127898 + ... + 127905.
It is an arithmetic number, because the mean of its divisors is an integer number (298438).
21023212 is an apocalyptic number.
It is an amenable number.
1023212 is a deficient number, since it is larger than the sum of its proper divisors (767416).
1023212 is a wasteful number, since it uses less digits than its factorization.
1023212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 255807 (or 255805 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 11.
The square root of 1023212 is about 1011.5394208828.
The cubic root of 1023212 is about 100.7678227269.
Subtracting from 1023212 its sum of digits (11), we obtain a palindrome (1023201).
Adding to 1023212 its reverse (2123201), we get a palindrome (3146413).
The spelling of 1023212 in words is "one million, twenty-three thousand, two hundred twelve".