2011210122222 has 128 divisors (see below), whose sum is σ = 5119037798400. Its totient is φ = 573372753408.

The previous prime is 2011210122217. The next prime is 2011210122239. The reversal of 2011210122222 is 2222210121102.

It is a happy number.

2011210122222 is a `hidden beast` number, since 201 + 121 + 0 + 122 + 222 = 666.

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 = 2011210122195 and 2011210122204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 379685878 + ... + 379691174.

It is an arithmetic number, because the mean of its divisors is an integer number (39992482800).

Almost surely, 2^{2011210122222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011210122222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2559518899200).

2011210122222 is an abundant number, since it is smaller than the sum of its proper divisors (3107827676178).

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

2011210122222 is a wasteful number, since it uses less digits than its factorization.

2011210122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7327 (or 7321 counting only the distinct ones).

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

Adding to 2011210122222 its reverse (2222210121102), we get a palindrome (4233420243324).

The spelling of 2011210122222 in words is "two trillion, eleven billion, two hundred ten million, one hundred twenty-two thousand, two hundred twenty-two".