20021322130220 has 24 divisors (see below), whose sum is σ = 42044917610304. Its totient is φ = 8008501968896.

The previous prime is 20021322130217. The next prime is 20021322130291. The reversal of 20021322130220 is 2203122312002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20021322130192 and 20021322130201.

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, 5092652 + ... + 8122668.

It is an arithmetic number, because the mean of its divisors is an integer number (1751871567096).

Almost surely, 2^{20021322130220} is an apocalyptic number.

20021322130220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021322130220 is an abundant number, since it is smaller than the sum of its proper divisors (22023595480084).

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

20021322130220 is a wasteful number, since it uses less digits than its factorization.

20021322130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360409 (or 3360407 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20021322130220 its reverse (2203122312002), we get a palindrome (22224444442222).

The spelling of 20021322130220 in words is "twenty trillion, twenty-one billion, three hundred twenty-two million, one hundred thirty thousand, two hundred twenty".