1122201221020 has 48 divisors (see below), whose sum is σ = 2571697497600. Its totient is φ = 407940390720.

The previous prime is 1122201220991. The next prime is 1122201221023. The reversal of 1122201221020 is 201221022211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1122201220985 and 1122201221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122201221023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150960 + ... + 1505719.

It is an arithmetic number, because the mean of its divisors is an integer number (53577031200).

Almost surely, 2^{1122201221020} is an apocalyptic number.

1122201221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122201221020 is an abundant number, since it is smaller than the sum of its proper divisors (1449496276580).

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

1122201221020 is a wasteful number, since it uses less digits than its factorization.

1122201221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659778 (or 1659776 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1122201221020 its reverse (201221022211), we get a palindrome (1323422243231).

The spelling of 1122201221020 in words is "one trillion, one hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, twenty".