1021004212 has 24 divisors (see below), whose sum is σ = 1835970752. Its totient is φ = 496540800.

The previous prime is 1021004209. The next prime is 1021004213. The reversal of 1021004212 is 2124001201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021004192 and 1021004201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021004213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29137 + ... + 53767.

Almost surely, 2^1021004212 is an apocalyptic number.

It is an amenable number.

1021004212 is a deficient number, since it is larger than the sum of its proper divisors (814966540).

1021004212 is a wasteful number, since it uses less digits than its factorization.

1021004212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24919 (or 24917 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1021004212 is about 31953.1565263903. The cubic root of 1021004212 is about 1006.9529484644.

Adding to 1021004212 its reverse (2124001201), we get a palindrome (3145005413).

The spelling of 1021004212 in words is "one billion, twenty-one million, four thousand, two hundred twelve".