1101221011020 has 192 divisors, whose sum is σ = 3608129064960. Its totient is φ = 248518886400.

The previous prime is 1101221011013. The next prime is 1101221011117. The reversal of 1101221011020 is 201101221011.

It is a super-2 number, since 2×1101221011020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1101221010987 and 1101221011005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 739071 + ... + 1657910.

It is an arithmetic number, because the mean of its divisors is an integer number (18792338880).

Almost surely, 2^{1101221011020} is an apocalyptic number.

1101221011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101221011020 is an abundant number, since it is smaller than the sum of its proper divisors (2506908053940).

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

1101221011020 is a wasteful number, since it uses less digits than its factorization.

1101221011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397056 (or 2397054 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1101221011020 its reverse (201101221011), we get a palindrome (1302322232031).

The spelling of 1101221011020 in words is "one trillion, one hundred one billion, two hundred twenty-one million, eleven thousand, twenty".