111021221122010 has 16 divisors (see below), whose sum is σ = 203608730058696. Its totient is φ = 43570592440128.

The previous prime is 111021221121929. The next prime is 111021221122037. The reversal of 111021221122010 is 10221122120111.

It can be written as a sum of positive squares in 4 ways, for example, as 106377708997849 + 4643512124161 = 10313957^2 + 2154881^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111021221122010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104737000529 + ... + 104737001588.

Almost surely, 2^{111021221122010} is an apocalyptic number.

111021221122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111021221122010 is a deficient number, since it is larger than the sum of its proper divisors (92587508936686).

111021221122010 is a wasteful number, since it uses less digits than its factorization.

111021221122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209474002177.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111021221122010 its reverse (10221122120111), we get a palindrome (121242343242121).

The spelling of 111021221122010 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, ten".