2011122221222 has 16 divisors (see below), whose sum is σ = 3115669167744. Its totient is φ = 972600696000.

The previous prime is 2011122221209. The next prime is 2011122221263. The reversal of 2011122221222 is 2221222211102.

It is a super-2 number, since 2×2011122221222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011122221194 and 2011122221203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8599679 + ... + 8830442.

It is an arithmetic number, because the mean of its divisors is an integer number (194729322984).

Almost surely, 2^{2011122221222} is an apocalyptic number.

2011122221222 is a deficient number, since it is larger than the sum of its proper divisors (1104546946522).

2011122221222 is a wasteful number, since it uses less digits than its factorization.

2011122221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17432015.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2011122221222 its reverse (2221222211102), we get a palindrome (4232344432324).

The spelling of 2011122221222 in words is "two trillion, eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".