1232121011 has 8 divisors (see below), whose sum is σ = 1375391424. Its totient is φ = 1094060520.

The previous prime is 1232120977. The next prime is 1232121047. The reversal of 1232121011 is 1101212321.

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-1232121011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1232121061) 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, 1301981 + ... + 1302926.

It is an arithmetic number, because the mean of its divisors is an integer number (171923928).

Almost surely, 2^1232121011 is an apocalyptic number.

1232121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1232121011 is a deficient number, since it is larger than the sum of its proper divisors (143270413).

1232121011 is a wasteful number, since it uses less digits than its factorization.

1232121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604961.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1232121011 is about 35101.5813176558. The cubic root of 1232121011 is about 1072.0567801824.

Adding to 1232121011 its reverse (1101212321), we get a palindrome (2333333332).

The spelling of 1232121011 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, eleven".