1021211042 has 16 divisors (see below), whose sum is σ = 1576523520. Its totient is φ = 495840912.

The previous prime is 1021211033. The next prime is 1021211129. The reversal of 1021211042 is 2401121201.

It is a happy 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 in 7 ways as a sum of consecutive naturals, for example, 19442 + ... + 49197.

It is an arithmetic number, because the mean of its divisors is an integer number (98532720).

Almost surely, 2^1021211042 is an apocalyptic number.

1021211042 is a deficient number, since it is larger than the sum of its proper divisors (555312478).

1021211042 is a wasteful number, since it uses less digits than its factorization.

1021211042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68857.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1021211042 is about 31956.3928189650. The cubic root of 1021211042 is about 1007.0209383950.

Adding to 1021211042 its reverse (2401121201), we get a palindrome (3422332243).

The spelling of 1021211042 in words is "one billion, twenty-one million, two hundred eleven thousand, forty-two".