111010120021010 has 96 divisors (see below), whose sum is σ = 233162565348528. Its totient is φ = 37942674739200.

The previous prime is 111010120020983. The next prime is 111010120021019. The reversal of 111010120021010 is 10120021010111.

It can be written as a sum of positive squares in 8 ways, for example, as 49735682836609 + 61274437184401 = 7052353^2 + 7827799^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111010120020982 and 111010120021000.

It is not an unprimeable number, because it can be changed into a prime (111010120021019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 325413452 + ... + 325754408.

Almost surely, 2^{111010120021010} is an apocalyptic number.

111010120021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111010120021010 is an abundant number, since it is smaller than the sum of its proper divisors (122152445327518).

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

111010120021010 is a wasteful number, since it uses less digits than its factorization.

111010120021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343036 (or 343029 counting only the distinct ones).

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

Adding to 111010120021010 its reverse (10120021010111), we get a palindrome (121130141031121).

The spelling of 111010120021010 in words is "one hundred eleven trillion, ten billion, one hundred twenty million, twenty-one thousand, ten".