2011012212222 has 80 divisors (see below), whose sum is σ = 4860782247552. Its totient is φ = 617753200320.

The previous prime is 2011012212217. The next prime is 2011012212257. The reversal of 2011012212222 is 2222122101102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2011012212195 and 2011012212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 491772 + ... + 2064912.

Almost surely, 2^{2011012212222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011012212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2430391123776).

2011012212222 is an abundant number, since it is smaller than the sum of its proper divisors (2849770035330).

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

2011012212222 is a wasteful number, since it uses less digits than its factorization.

2011012212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573775 (or 1573766 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2011012212222 its reverse (2222122101102), we get a palindrome (4233134313324).

The spelling of 2011012212222 in words is "two trillion, eleven billion, twelve million, two hundred twelve thousand, two hundred twenty-two".