1121202020022 has 128 divisors (see below), whose sum is σ = 2733965568000. Its totient is φ = 306408615744.

The previous prime is 1121202019991. The next prime is 1121202020023. The reversal of 1121202020022 is 2200202021211.

It is a junction number, because it is equal to n+sod(n) for n = 1121202019983 and 1121202020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121202020023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25017298 + ... + 25062074.

It is an arithmetic number, because the mean of its divisors is an integer number (21359106000).

Almost surely, 2^{1121202020022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121202020022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366982784000).

1121202020022 is an abundant number, since it is smaller than the sum of its proper divisors (1612763547978).

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

1121202020022 is an frugal number, since it uses more digits than its factorization.

1121202020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44872 (or 44812 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1121202020022 its reverse (2200202021211), we get a palindrome (3321404041233).

The spelling of 1121202020022 in words is "one trillion, one hundred twenty-one billion, two hundred two million, twenty thousand, twenty-two".