11211220120122 has 24 divisors (see below), whose sum is σ = 26499247557120. Its totient is φ = 3397339430280.

The previous prime is 11211220120097. The next prime is 11211220120157. The reversal of 11211220120122 is 22102102211211.

11211220120122 is a `hidden beast` number, since 11 + 211 + 220 + 1 + 201 + 22 = 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 = 11211220120095 and 11211220120104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28311161722 + ... + 28311162117.

It is an arithmetic number, because the mean of its divisors is an integer number (1104135314880).

Almost surely, 2^{11211220120122} is an apocalyptic number.

11211220120122 is an abundant number, since it is smaller than the sum of its proper divisors (15288027436998).

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

11211220120122 is a wasteful number, since it uses less digits than its factorization.

11211220120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56622323858 (or 56622323855 counting only the distinct ones).

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

Adding to 11211220120122 its reverse (22102102211211), we get a palindrome (33313322331333).

The spelling of 11211220120122 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-two".