111122021211201 has 432 divisors, whose sum is σ = 234337214928960. Its totient is φ = 50056982277120.

The previous prime is 111122021211199. The next prime is 111122021211239. The reversal of 111122021211201 is 102112120221111.

It is a happy number.

111122021211201 is a `hidden beast` number, since 1 + 1 + 11 + 220 + 21 + 211 + 201 = 666.

It is not a de Polignac number, because 111122021211201 - 2¹ = 111122021211199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111122021219201) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 879602626 + ... + 879728948.

It is an arithmetic number, because the mean of its divisors is an integer number (542447256780).

Almost surely, 2^{111122021211201} is an apocalyptic number.

111122021211201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111122021211201 is an abundant number, since it is smaller than the sum of its proper divisors (123215193717759).

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

111122021211201 is a wasteful number, since it uses less digits than its factorization.

111122021211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126446 (or 126423 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111122021211201 its reverse (102112120221111), we get a palindrome (213234141432312).

The spelling of 111122021211201 in words is "one hundred eleven trillion, one hundred twenty-two billion, twenty-one million, two hundred eleven thousand, two hundred one".