111021111010 has 8 divisors (see below), whose sum is σ = 199837999836. Its totient is φ = 44408444400.

The previous prime is 111021110999. The next prime is 111021111023. The reversal of 111021111010 is 10111120111.

It can be written as a sum of positive squares in 2 ways, for example, as 99087077961 + 11934033049 = 314781^2 + 109243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 11102111101 = 111021111010 / (1 + 1 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 0 + 1 + 0).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5551055541 + ... + 5551055560.

Almost surely, 2^111021111010 is an apocalyptic number.

111021111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111021111010 is a deficient number, since it is larger than the sum of its proper divisors (88816888826).

111021111010 is a wasteful number, since it uses less digits than its factorization.

111021111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11102111108.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 111021111010 its reverse (10111120111), we get a palindrome (121132231121).

The spelling of 111021111010 in words is "one hundred eleven billion, twenty-one million, one hundred eleven thousand, ten".