1111201211022 has 64 divisors (see below), whose sum is σ = 2576549606400. Its totient is φ = 312906504960.

The previous prime is 1111201211017. The next prime is 1111201211027. The reversal of 1111201211022 is 2201121021111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1111201211017) and next prime (1111201211027).

It is a junction number, because it is equal to n+sod(n) for n = 1111201210992 and 1111201211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111201211027) 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, 8790804 + ... + 8916312.

It is an arithmetic number, because the mean of its divisors is an integer number (40258587600).

Almost surely, 2^{1111201211022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111201211022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288274803200).

1111201211022 is an abundant number, since it is smaller than the sum of its proper divisors (1465348395378).

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

1111201211022 is a wasteful number, since it uses less digits than its factorization.

1111201211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128561.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111201211022 its reverse (2201121021111), we get a palindrome (3312322232133).

The spelling of 1111201211022 in words is "one trillion, one hundred eleven billion, two hundred one million, two hundred eleven thousand, twenty-two".