1222020121122 has 80 divisors (see below), whose sum is σ = 2867601287232. Its totient is φ = 388222670880.

The previous prime is 1222020121121. The next prime is 1222020121159. The reversal of 1222020121122 is 2211210202221.

It is a happy number.

1222020121122 is a `hidden beast` number, since 12 + 220 + 201 + 211 + 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 = 1222020121095 and 1222020121104.

It is not an unprimeable number, because it can be changed into a prime (1222020121121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 440097 + ... + 1624107.

Almost surely, 2^{1222020121122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222020121122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433800643616).

1222020121122 is an abundant number, since it is smaller than the sum of its proper divisors (1645581166110).

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

1222020121122 is a wasteful number, since it uses less digits than its factorization.

1222020121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184325 (or 1184316 counting only the distinct ones).

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

Adding to 1222020121122 its reverse (2211210202221), we get a palindrome (3433230323343).

The spelling of 1222020121122 in words is "one trillion, two hundred twenty-two billion, twenty million, one hundred twenty-one thousand, one hundred twenty-two".