10001122221020 has 24 divisors (see below), whose sum is σ = 24002693330784. Its totient is φ = 3428956190016.

The previous prime is 10001122220951. The next prime is 10001122221047. The reversal of 10001122221020 is 2012222110001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 10001122220986 and 10001122221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35718293507 + ... + 35718293786.

It is an arithmetic number, because the mean of its divisors is an integer number (1000112222116).

Almost surely, 2^{10001122221020} is an apocalyptic number.

10001122221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001122221020 is an abundant number, since it is smaller than the sum of its proper divisors (14001571109764).

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

10001122221020 is a wasteful number, since it uses less digits than its factorization.

10001122221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71436587309 (or 71436587307 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10001122221020 its reverse (2012222110001), we get a palindrome (12013344331021).

The spelling of 10001122221020 in words is "ten trillion, one billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty".