111210212210 has 32 divisors (see below), whose sum is σ = 203949585072. Its totient is φ = 43653836800.

The previous prime is 111210212203. The next prime is 111210212227. The reversal of 111210212210 is 12212012111.

It can be written as a sum of positive squares in 8 ways, for example, as 11448358009 + 99761854201 = 106997^2 + 315851^2 .

It is a super-2 number, since 2×111210212210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373079 + ... + 601338.

Almost surely, 2^111210212210 is an apocalyptic number.

111210212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111210212210 is a deficient number, since it is larger than the sum of its proper divisors (92739372862).

111210212210 is a wasteful number, since it uses less digits than its factorization.

111210212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974638.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111210212210 its reverse (12212012111), we get a palindrome (123422224321).

The spelling of 111210212210 in words is "one hundred eleven billion, two hundred ten million, two hundred twelve thousand, two hundred ten".