1021229996 has 24 divisors (see below), whose sum is σ = 1815755760. Its totient is φ = 502474752.

The previous prime is 1021229977. The next prime is 1021229999. The reversal of 1021229996 is 6999221201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1021229999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132620 + ... + 140108.

It is an arithmetic number, because the mean of its divisors is an integer number (75656490).

Almost surely, 2^1021229996 is an apocalyptic number.

It is an amenable number.

1021229996 is a deficient number, since it is larger than the sum of its proper divisors (794525764).

1021229996 is a wasteful number, since it uses less digits than its factorization.

1021229996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8033 (or 8031 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 1021229996 is about 31956.6893779691. The cubic root of 1021229996 is about 1007.0271685655.

The spelling of 1021229996 in words is "one billion, twenty-one million, two hundred twenty-nine thousand, nine hundred ninety-six".