11211201220122 has 96 divisors (see below), whose sum is σ = 25252380840960. Its totient is φ = 3590949415680.

The previous prime is 11211201220099. The next prime is 11211201220123. The reversal of 11211201220122 is 22102210211211.

11211201220122 is a `hidden beast` number, since 1 + 121 + 1 + 201 + 220 + 122 = 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 = 11211201220095 and 11211201220104.

It is not an unprimeable number, because it can be changed into a prime (11211201220123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46554928 + ... + 46795124.

It is an arithmetic number, because the mean of its divisors is an integer number (263045633760).

Almost surely, 2^{11211201220122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11211201220122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12626190420480).

11211201220122 is an abundant number, since it is smaller than the sum of its proper divisors (14041179620838).

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

11211201220122 is a wasteful number, since it uses less digits than its factorization.

11211201220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240828 (or 240825 counting only the distinct ones).

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

Adding to 11211201220122 its reverse (22102210211211), we get a palindrome (33313411431333).

The spelling of 11211201220122 in words is "eleven trillion, two hundred eleven billion, two hundred one million, two hundred twenty thousand, one hundred twenty-two".