20220021220100 has 36 divisors (see below), whose sum is σ = 47252634208164. Its totient is φ = 7465853988480.

The previous prime is 20220021220081. The next prime is 20220021220121. The reversal of 20220021220100 is 102212002202.

It can be written as a sum of positive squares in 6 ways, for example, as 6517941756676 + 13702079463424 = 2553026^2 + 3701632^2 .

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, 7776929939 + ... + 7776932538.

It is an arithmetic number, because the mean of its divisors is an integer number (1312573172449).

Almost surely, 2^{20220021220100} is an apocalyptic number.

20220021220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220021220100 is an abundant number, since it is smaller than the sum of its proper divisors (27032612988064).

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

20220021220100 is a wasteful number, since it uses less digits than its factorization.

20220021220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15553862504 (or 15553862497 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20220021220100 its reverse (102212002202), we get a palindrome (20322233222302).

The spelling of 20220021220100 in words is "twenty trillion, two hundred twenty billion, twenty-one million, two hundred twenty thousand, one hundred".