111121012010 has 32 divisors (see below), whose sum is σ = 200591500032. Its totient is φ = 44321058880.

The previous prime is 111121011979. The next prime is 111121012021. The reversal of 111121012010 is 10210121111.

It is a junction number, because it is equal to n+sod(n) for n = 111121011982 and 111121012000.

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, 7290017 + ... + 7305243.

It is an arithmetic number, because the mean of its divisors is an integer number (6268484376).

Almost surely, 2^111121012010 is an apocalyptic number.

111121012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111121012010 is a deficient number, since it is larger than the sum of its proper divisors (89470488022).

111121012010 is a wasteful number, since it uses less digits than its factorization.

111121012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17278.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111121012010 its reverse (10210121111), we get a palindrome (121331133121).

The spelling of 111121012010 in words is "one hundred eleven billion, one hundred twenty-one million, twelve thousand, ten".