10211122221020 has 24 divisors (see below), whose sum is σ = 24506693330784. Its totient is φ = 3500956190016.

The previous prime is 10211122221011. The next prime is 10211122221089. The reversal of 10211122221020 is 2012222111201.

It is a self number, because there is not a number n which added to its sum of digits gives 10211122221020.

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, 36468293507 + ... + 36468293786.

It is an arithmetic number, because the mean of its divisors is an integer number (1021112222116).

Almost surely, 2^{10211122221020} is an apocalyptic number.

10211122221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211122221020 is an abundant number, since it is smaller than the sum of its proper divisors (14295571109764).

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

10211122221020 is a wasteful number, since it uses less digits than its factorization.

10211122221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72936587309 (or 72936587307 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10211122221020 its reverse (2012222111201), we get a palindrome (12223344332221).

The spelling of 10211122221020 in words is "ten trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty".