111021011010 has 192 divisors, whose sum is σ = 359261360640. Its totient is φ = 23160867840.

The previous prime is 111021010973. The next prime is 111021011027. The reversal of 111021011010 is 10110120111.

It is a super-3 number, since 3×111021011010³ (a number of 34 digits) contains 333 as substring.

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 = 111021010983 and 111021011001.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 652755 + ... + 805065.

It is an arithmetic number, because the mean of its divisors is an integer number (1871152920).

Almost surely, 2^111021011010 is an apocalyptic number.

111021011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111021011010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179630680320).

111021011010 is an abundant number, since it is smaller than the sum of its proper divisors (248240349630).

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

111021011010 is a wasteful number, since it uses less digits than its factorization.

111021011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152433 (or 152430 counting only the distinct ones).

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

Adding to 111021011010 its reverse (10110120111), we get a palindrome (121131131121).

The spelling of 111021011010 in words is "one hundred eleven billion, twenty-one million, eleven thousand, ten".