20211222000100 has 36 divisors (see below), whose sum is σ = 43880581439604. Its totient is φ = 8080391159680.

The previous prime is 20211222000089. The next prime is 20211222000133. The reversal of 20211222000100 is 100022211202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1268758937664 + 18942463062436 = 1126392^2 + 4352294^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51022219 + ... + 51416818.

It is an arithmetic number, because the mean of its divisors is an integer number (1218905039989).

Almost surely, 2^{20211222000100} is an apocalyptic number.

20211222000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211222000100 is an abundant number, since it is smaller than the sum of its proper divisors (23669359439504).

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

20211222000100 is a wasteful number, since it uses less digits than its factorization.

20211222000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102441024 (or 102441017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20211222000100 its reverse (100022211202), we get a palindrome (20311244211302).

The spelling of 20211222000100 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, one hundred", and thus it is an aban number.