1201232011 has 6 divisors (see below), whose sum is σ = 1397351580. Its totient is φ = 1029627396.

The previous prime is 1201231987. The next prime is 1201232033. The reversal of 1201232011 is 1102321021.

It is not a de Polignac number, because 1201232011 - 2⁵ = 1201231979 is a prime.

It is a super-2 number, since 2×1201232011² = 2885916688502208242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201231982 and 1201232000.

It is not an unprimeable number, because it can be changed into a prime (1201232111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12257421 + ... + 12257518.

It is an arithmetic number, because the mean of its divisors is an integer number (232891930).

Almost surely, 2^1201232011 is an apocalyptic number.

1201232011 is a deficient number, since it is larger than the sum of its proper divisors (196119569).

1201232011 is an equidigital number, since it uses as much as digits as its factorization.

1201232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24514953 (or 24514946 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1201232011 is about 34658.7941365536. The cubic root of 1201232011 is about 1063.0221134210.

Adding to 1201232011 its reverse (1102321021), we get a palindrome (2303553032).

The spelling of 1201232011 in words is "one billion, two hundred one million, two hundred thirty-two thousand, eleven".