111201212121022 has 8 divisors (see below), whose sum is σ = 167062039428672. Its totient is φ = 55513865644800.

The previous prime is 111201212121019. The next prime is 111201212121089. The reversal of 111201212121022 is 220121212102111.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43370206254 + ... + 43370208817.

It is an arithmetic number, because the mean of its divisors is an integer number (20882754928584).

Almost surely, 2^{111201212121022} is an apocalyptic number.

111201212121022 is a deficient number, since it is larger than the sum of its proper divisors (55860827307650).

111201212121022 is an equidigital number, since it uses as much as digits as its factorization.

111201212121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86740415714.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111201212121022 its reverse (220121212102111), we get a palindrome (331322424223133).

The spelling of 111201212121022 in words is "one hundred eleven trillion, two hundred one billion, two hundred twelve million, one hundred twenty-one thousand, twenty-two".