111212020011010 has 32 divisors (see below), whose sum is σ = 208895490680832. Its totient is φ = 42548586696000.

The previous prime is 111212020010947. The next prime is 111212020011019. The reversal of 111212020011010 is 10110020212111.

It is a happy number.

It is a super-2 number, since 2×111212020011010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111212020011019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7251241 + ... + 16583260.

It is an arithmetic number, because the mean of its divisors is an integer number (6527984083776).

Almost surely, 2^{111212020011010} is an apocalyptic number.

111212020011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111212020011010 is a deficient number, since it is larger than the sum of its proper divisors (97683470669822).

111212020011010 is a wasteful number, since it uses less digits than its factorization.

111212020011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23854818.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111212020011010 its reverse (10110020212111), we get a palindrome (121322040223121).

The spelling of 111212020011010 in words is "one hundred eleven trillion, two hundred twelve billion, twenty million, eleven thousand, ten".