1211231011332 has 96 divisors (see below), whose sum is σ = 2994893540352. Its totient is φ = 380197673856.

The previous prime is 1211231011303. The next prime is 1211231011337. The reversal of 1211231011332 is 2331101321121.

It is a junction number, because it is equal to n+sod(n) for n = 1211231011299 and 1211231011308.

It is not an unprimeable number, because it can be changed into a prime (1211231011337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32286778 + ... + 32324270.

It is an arithmetic number, because the mean of its divisors is an integer number (31196807712).

Almost surely, 2^{1211231011332} is an apocalyptic number.

1211231011332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211231011332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497446770176).

1211231011332 is an abundant number, since it is smaller than the sum of its proper divisors (1783662529020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211231011332 is a wasteful number, since it uses less digits than its factorization.

1211231011332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39337 (or 39335 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1211231011332 its reverse (2331101321121), we get a palindrome (3542332332453).

The spelling of 1211231011332 in words is "one trillion, two hundred eleven billion, two hundred thirty-one million, eleven thousand, three hundred thirty-two".