1221013058 has 32 divisors (see below), whose sum is σ = 1912896000. Its totient is φ = 583896960.

The previous prime is 1221013051. The next prime is 1221013097. The reversal of 1221013058 is 8503101221.

It is a happy number.

It is a super-3 number, since 3×1221013058³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1221013051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2985158 + ... + 2985566.

It is an arithmetic number, because the mean of its divisors is an integer number (59778000).

Almost surely, 2^1221013058 is an apocalyptic number.

1221013058 is a deficient number, since it is larger than the sum of its proper divisors (691882942).

1221013058 is a wasteful number, since it uses less digits than its factorization.

1221013058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1221013058 is about 34942.9972669775. The cubic root of 1221013058 is about 1068.8254085935.

Adding to 1221013058 its reverse (8503101221), we get a palindrome (9724114279).

The spelling of 1221013058 in words is "one billion, two hundred twenty-one million, thirteen thousand, fifty-eight".