111212122010 has 64 divisors (see below), whose sum is σ = 231776930304. Its totient is φ = 37971225600.

The previous prime is 111212122003. The next prime is 111212122057. The reversal of 111212122010 is 10221212111.

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 31 ways as a sum of consecutive naturals, for example, 716639 + ... + 857901.

It is an arithmetic number, because the mean of its divisors is an integer number (3621514536).

Almost surely, 2^111212122010 is an apocalyptic number.

111212122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111212122010 is an abundant number, since it is smaller than the sum of its proper divisors (120564808294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111212122010 is a wasteful number, since it uses less digits than its factorization.

111212122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141719.

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

Adding to 111212122010 its reverse (10221212111), we get a palindrome (121433334121).

The spelling of 111212122010 in words is "one hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, ten".