111211211220010 has 64 divisors (see below), whose sum is σ = 222152156029440. Its totient is φ = 39742039955520.

The previous prime is 111211211220007. The next prime is 111211211220019. The reversal of 111211211220010 is 10022112112111.

It is a super-2 number, since 2×111211211220010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111211211220019) 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, 17111257 + ... + 22698403.

It is an arithmetic number, because the mean of its divisors is an integer number (3471127437960).

Almost surely, 2^{111211211220010} is an apocalyptic number.

111211211220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111211211220010 is a deficient number, since it is larger than the sum of its proper divisors (110940944809430).

111211211220010 is a wasteful number, since it uses less digits than its factorization.

111211211220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590291.

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

Adding to 111211211220010 its reverse (10022112112111), we get a palindrome (121233323332121).

The spelling of 111211211220010 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty thousand, ten".