1021223132 has 6 divisors (see below), whose sum is σ = 1787140488. Its totient is φ = 510611564.

The previous prime is 1021223107. The next prime is 1021223141. The reversal of 1021223132 is 2313221201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021223132.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 127652888 + ... + 127652895.

It is an arithmetic number, because the mean of its divisors is an integer number (297856748).

Almost surely, 2^1021223132 is an apocalyptic number.

It is an amenable number.

1021223132 is a deficient number, since it is larger than the sum of its proper divisors (765917356).

1021223132 is a wasteful number, since it uses less digits than its factorization.

1021223132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255305787 (or 255305785 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1021223132 is about 31956.5819824336. The cubic root of 1021223132 is about 1007.0249123810.

Adding to 1021223132 its reverse (2313221201), we get a palindrome (3334444333).

The spelling of 1021223132 in words is "one billion, twenty-one million, two hundred twenty-three thousand, one hundred thirty-two".