111201021221010 has 32 divisors (see below), whose sum is σ = 305008515349632. Its totient is φ = 25417376279040.

The previous prime is 111201021220967. The next prime is 111201021221039. The reversal of 111201021221010 is 10122120102111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264764336031 + ... + 264764336450.

It is an arithmetic number, because the mean of its divisors is an integer number (9531516104676).

Almost surely, 2^{111201021221010} is an apocalyptic number.

111201021221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111201021221010 is an abundant number, since it is smaller than the sum of its proper divisors (193807494128622).

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

111201021221010 is a wasteful number, since it uses less digits than its factorization.

111201021221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529528672498.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111201021221010 its reverse (10122120102111), we get a palindrome (121323141323121).

The spelling of 111201021221010 in words is "one hundred eleven trillion, two hundred one billion, twenty-one million, two hundred twenty-one thousand, ten".