111210220121210 has 32 divisors (see below), whose sum is σ = 228793774770432. Its totient is φ = 38126140859520.

The previous prime is 111210220121207. The next prime is 111210220121249. The reversal of 111210220121210 is 12121022012111.

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 15 ways as a sum of consecutive naturals, for example, 63240347 + ... + 64975086.

It is an arithmetic number, because the mean of its divisors is an integer number (7149805461576).

Almost surely, 2^{111210220121210} is an apocalyptic number.

111210220121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111210220121210 is an abundant number, since it is smaller than the sum of its proper divisors (117583554649222).

111210220121210 is a wasteful number, since it uses less digits than its factorization.

111210220121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128227838.

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

Adding to 111210220121210 its reverse (12121022012111), we get a palindrome (123331242133321).

The spelling of 111210220121210 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, two hundred ten".