1220011211132 has 96 divisors (see below), whose sum is σ = 2539292958720. Its totient is φ = 501809978880.

The previous prime is 1220011211131. The next prime is 1220011211203. The reversal of 1220011211132 is 2311121100221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220011211132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220011211131) 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, 309096383 + ... + 309100329.

It is an arithmetic number, because the mean of its divisors is an integer number (26450968320).

Almost surely, 2^{1220011211132} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220011211132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269646479360).

1220011211132 is an abundant number, since it is smaller than the sum of its proper divisors (1319281747588).

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

1220011211132 is a wasteful number, since it uses less digits than its factorization.

1220011211132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171 (or 6169 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1220011211132 its reverse (2311121100221), we get a palindrome (3531132311353).

The spelling of 1220011211132 in words is "one trillion, two hundred twenty billion, eleven million, two hundred eleven thousand, one hundred thirty-two".