2011211122122 has 48 divisors (see below), whose sum is σ = 4407041770560. Its totient is φ = 662822027136.

The previous prime is 2011211122099. The next prime is 2011211122127. The reversal of 2011211122122 is 2212211121102.

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 = 2011211122095 and 2011211122104.

It is not an unprimeable number, because it can be changed into a prime (2011211122127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271378 + ... + 2023874.

It is an arithmetic number, because the mean of its divisors is an integer number (91813370220).

Almost surely, 2^{2011211122122} is an apocalyptic number.

2011211122122 is an abundant number, since it is smaller than the sum of its proper divisors (2395830648438).

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

2011211122122 is a wasteful number, since it uses less digits than its factorization.

2011211122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753227 (or 1753224 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2011211122122 its reverse (2212211121102), we get a palindrome (4223422243224).

The spelling of 2011211122122 in words is "two trillion, eleven billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".