2011222112021 has 16 divisors (see below), whose sum is σ = 2027918390400.
Its totient is φ = 1994602579200.
The previous prime is 2011222112017. The next prime is 2011222112069. The reversal of 2011222112021 is 1202112221102.
It is a cyclic number.
It is not a de Polignac number, because 2011222112021 - 22 = 2011222112017 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2011222142021) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76889081 + ... + 76915233.
It is an arithmetic number, because the mean of its divisors is an integer number (126744899400).
Almost surely, 22011222112021 is an apocalyptic number.
It is an amenable number.
2011222112021 is a deficient number, since it is larger than the sum of its proper divisors (16696278379).
2011222112021 is a wasteful number, since it uses less digits than its factorization.
2011222112021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27596.
The product of its (nonzero) digits is 64, while the sum is 17.
Adding to 2011222112021 its reverse (1202112221102), we get a palindrome (3213334333123).
The spelling of 2011222112021 in words is "two trillion, eleven billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".