1100101221020 has 48 divisors (see below), whose sum is σ = 2345719289088. Its totient is φ = 433297175040.

The previous prime is 1100101221017. The next prime is 1100101221041. The reversal of 1100101221020 is 201221010011.

It is a junction number, because it is equal to n+sod(n) for n = 1100101220992 and 1100101221010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265550 + ... + 1506890.

It is an arithmetic number, because the mean of its divisors is an integer number (48869151856).

Almost surely, 2^{1100101221020} is an apocalyptic number.

1100101221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100101221020 is an abundant number, since it is smaller than the sum of its proper divisors (1245618068068).

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

1100101221020 is a wasteful number, since it uses less digits than its factorization.

1100101221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242030 (or 1242028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100101221020 its reverse (201221010011), we get a palindrome (1301322231031).

The spelling of 1100101221020 in words is "one trillion, one hundred billion, one hundred one million, two hundred twenty-one thousand, twenty".