1213233011 has 8 divisors (see below), whose sum is σ = 1281451920. Its totient is φ = 1145450592.

The previous prime is 1213232987. The next prime is 1213233023. The reversal of 1213233011 is 1103323121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213233011 is a prime.

It is a super-2 number, since 2×1213233011² = 2943868677960252242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213233211) 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, 103400 + ... + 114533.

It is an arithmetic number, because the mean of its divisors is an integer number (160181490).

Almost surely, 2^1213233011 is an apocalyptic number.

1213233011 is a deficient number, since it is larger than the sum of its proper divisors (68218909).

1213233011 is a wasteful number, since it uses less digits than its factorization.

1213233011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218245.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213233011 is about 34831.4945272235. The cubic root of 1213233011 is about 1066.5504571424.

Adding to 1213233011 its reverse (1103323121), we get a palindrome (2316556132).

The spelling of 1213233011 in words is "one billion, two hundred thirteen million, two hundred thirty-three thousand, eleven".