1121222012022 has 288 divisors, whose sum is σ = 3009731437440. Its totient is φ = 311739684480.

The previous prime is 1121222012011. The next prime is 1121222012023. The reversal of 1121222012022 is 2202102221211.

It is a happy number.

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 = 1121222011986 and 1121222012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121222012023) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 455965429 + ... + 455967887.

It is an arithmetic number, because the mean of its divisors is an integer number (10450456380).

Almost surely, 2^{1121222012022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121222012022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504865718720).

1121222012022 is an abundant number, since it is smaller than the sum of its proper divisors (1888509425418).

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

1121222012022 is a wasteful number, since it uses less digits than its factorization.

1121222012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998 (or 2979 counting only the distinct ones).

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

Adding to 1121222012022 its reverse (2202102221211), we get a palindrome (3323324233233).

The spelling of 1121222012022 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, twelve thousand, twenty-two".