1211213232011 has 8 divisors (see below), whose sum is σ = 1268945593344. Its totient is φ = 1154647181160.

The previous prime is 1211213231999. The next prime is 1211213232067. The reversal of 1211213232011 is 1102323121121.

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-1211213232011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211213232091) 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, 291575495 + ... + 291579648.

It is an arithmetic number, because the mean of its divisors is an integer number (158618199168).

Almost surely, 2^{1211213232011} is an apocalyptic number.

1211213232011 is a deficient number, since it is larger than the sum of its proper divisors (57732361333).

1211213232011 is an equidigital number, since it uses as much as digits as its factorization.

1211213232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583155241.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1211213232011 its reverse (1102323121121), we get a palindrome (2313536353132).

The spelling of 1211213232011 in words is "one trillion, two hundred eleven billion, two hundred thirteen million, two hundred thirty-two thousand, eleven".