111211020122001 has 8 divisors (see below), whose sum is σ = 149667167267424. Its totient is φ = 73447776528960.

The previous prime is 111211020121939. The next prime is 111211020122039. The reversal of 111211020122001 is 100221020112111.

It is a happy number.

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

It is not a de Polignac number, because 111211020122001 - 2¹⁷ = 111211019990929 is a prime.

It is a super-2 number, since 2×111211020122001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111211020522001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173225887720 + ... + 173225888361.

It is an arithmetic number, because the mean of its divisors is an integer number (18708395908428).

Almost surely, 2^{111211020122001} is an apocalyptic number.

It is an amenable number.

111211020122001 is a deficient number, since it is larger than the sum of its proper divisors (38456147145423).

111211020122001 is a wasteful number, since it uses less digits than its factorization.

111211020122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346451776191.

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

Adding to 111211020122001 its reverse (100221020112111), we get a palindrome (211432040234112).

The spelling of 111211020122001 in words is "one hundred eleven trillion, two hundred eleven billion, twenty million, one hundred twenty-two thousand, one".