1100021020220 has 24 divisors (see below), whose sum is σ = 2310413598864. Its totient is φ = 439938035456.

The previous prime is 1100021020121. The next prime is 1100021020223. The reversal of 1100021020220 is 220201200011.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100021020223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4270022 + ... + 4520301.

It is an arithmetic number, because the mean of its divisors is an integer number (96267233286).

Almost surely, 2^{1100021020220} is an apocalyptic number.

1100021020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100021020220 is an abundant number, since it is smaller than the sum of its proper divisors (1210392578644).

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

1100021020220 is a wasteful number, since it uses less digits than its factorization.

1100021020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796589 (or 8796587 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1100021020220 its reverse (220201200011), we get a palindrome (1320222220231).

The spelling of 1100021020220 in words is "one trillion, one hundred billion, twenty-one million, twenty thousand, two hundred twenty".