1021012 has 6 divisors (see below), whose sum is σ = 1786778. Its totient is φ = 510504.
The previous prime is 1021001. The next prime is 1021019. The reversal of 1021012 is 2101201.
1021012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in only one way, i.e., 1008016 + 12996 = 1004^2 + 114^2 .
It is a junction number, because it is equal to n+sod(n) for n = 1020986 and 1021004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1021019) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127623 + ... + 127630.
21021012 is an apocalyptic number.
It is an amenable number.
1021012 is a deficient number, since it is larger than the sum of its proper divisors (765766).
1021012 is a wasteful number, since it uses less digits than its factorization.
1021012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 255257 (or 255255 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 7.
The square root of 1021012 is about 1010.4513842833. The cubic root of 1021012 is about 100.6955508731.
Adding to 1021012 its reverse (2101201), we get a palindrome (3122213).
The spelling of 1021012 in words is "one million, twenty-one thousand, twelve".
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