111010021210 has 32 divisors (see below), whose sum is σ = 218607984000. Its totient is φ = 40251600960.

The previous prime is 111010021159. The next prime is 111010021217. The reversal of 111010021210 is 12120010111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (111010021217) by changing a digit.

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, 1407430 + ... + 1484209.

It is an arithmetic number, because the mean of its divisors is an integer number (6831499500).

Almost surely, 2^111010021210 is an apocalyptic number.

111010021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111010021210 is a deficient number, since it is larger than the sum of its proper divisors (107597962790).

111010021210 is a wasteful number, since it uses less digits than its factorization.

111010021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892006.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111010021210 its reverse (12120010111), we get a palindrome (123130031321).

The spelling of 111010021210 in words is "one hundred eleven billion, ten million, twenty-one thousand, two hundred ten".