1213101233 has 16 divisors (see below), whose sum is σ = 1272969600. Its totient is φ = 1154563200.

The previous prime is 1213101229. The next prime is 1213101271. The reversal of 1213101233 is 3321013121.

It is a cyclic number.

It is not a de Polignac number, because 1213101233 - 2² = 1213101229 is a prime.

It is a super-2 number, since 2×1213101233² = 2943229203012240578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213101223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607685 + ... + 609677.

It is an arithmetic number, because the mean of its divisors is an integer number (79560600).

Almost surely, 2^1213101233 is an apocalyptic number.

It is an amenable number.

1213101233 is a deficient number, since it is larger than the sum of its proper divisors (59868367).

1213101233 is a wasteful number, since it uses less digits than its factorization.

1213101233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312.

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

The square root of 1213101233 is about 34829.6028257573. The cubic root of 1213101233 is about 1066.5118404947.

Adding to 1213101233 its reverse (3321013121), we get a palindrome (4534114354).

The spelling of 1213101233 in words is "one billion, two hundred thirteen million, one hundred one thousand, two hundred thirty-three".