1121222221010 has 32 divisors (see below), whose sum is σ = 2021990145840. Its totient is φ = 447646998528.

The previous prime is 1121222220961. The next prime is 1121222221019. The reversal of 1121222221010 is 101222221211.

It can be written as a sum of positive squares in 8 ways, for example, as 66676019089 + 1054546201921 = 258217^2 + 1026911^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1121222221010.

It is not an unprimeable number, because it can be changed into a prime (1121222221019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27644426 + ... + 27684954.

Almost surely, 2^{1121222221010} is an apocalyptic number.

1121222221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121222221010 is a deficient number, since it is larger than the sum of its proper divisors (900767924830).

1121222221010 is a wasteful number, since it uses less digits than its factorization.

1121222221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45662.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1121222221010 its reverse (101222221211), we get a palindrome (1222444442221).

The spelling of 1121222221010 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, ten".