111110021010 has 48 divisors (see below), whose sum is σ = 288975622104. Its totient is φ = 29620152576.

The previous prime is 111110020999. The next prime is 111110021051. The reversal of 111110021010 is 10120011111.

It can be written as a sum of positive squares in 4 ways, for example, as 110954943801 + 155077209 = 333099^2 + 12453^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111110020983 and 111110021001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103014 + ... + 482526.

Almost surely, 2^111110021010 is an apocalyptic number.

111110021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111110021010 is an abundant number, since it is smaller than the sum of its proper divisors (177865601094).

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

111110021010 is a wasteful number, since it uses less digits than its factorization.

111110021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382779 (or 382776 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111110021010 its reverse (10120011111), we get a palindrome (121230032121).

The spelling of 111110021010 in words is "one hundred eleven billion, one hundred ten million, twenty-one thousand, ten".