20010013123220 has 96 divisors (see below), whose sum is σ = 42802868524416. Its totient is φ = 7855666675200.

The previous prime is 20010013123147. The next prime is 20010013123223. The reversal of 20010013123220 is 2232131001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010013123223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2220123434 + ... + 2220132446.

It is an arithmetic number, because the mean of its divisors is an integer number (445863213796).

Almost surely, 2^{20010013123220} is an apocalyptic number.

20010013123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010013123220 is an abundant number, since it is smaller than the sum of its proper divisors (22792855401196).

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

20010013123220 is a wasteful number, since it uses less digits than its factorization.

20010013123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12841 (or 12839 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20010013123220 its reverse (2232131001002), we get a palindrome (22242144124222).

The spelling of 20010013123220 in words is "twenty trillion, ten billion, thirteen million, one hundred twenty-three thousand, two hundred twenty".