1111222101210 has 256 divisors, whose sum is σ = 3077175951360. Its totient is φ = 254831109120.

The previous prime is 1111222101113. The next prime is 1111222101233. The reversal of 1111222101210 is 121012221111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1111222101210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 37726749 + ... + 37756191.

It is an arithmetic number, because the mean of its divisors is an integer number (12020218560).

Almost surely, 2^{1111222101210} is an apocalyptic number.

1111222101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111222101210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1538587975680).

1111222101210 is an abundant number, since it is smaller than the sum of its proper divisors (1965953850150).

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

1111222101210 is a wasteful number, since it uses less digits than its factorization.

1111222101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29613.

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

Adding to 1111222101210 its reverse (121012221111), we get a palindrome (1232234322321).

The spelling of 1111222101210 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, one hundred one thousand, two hundred ten".