20726301220220 has 24 divisors (see below), whose sum is σ = 43694591454864. Its totient is φ = 8258261651456.

The previous prime is 20726301220201. The next prime is 20726301220231. The reversal of 20726301220220 is 2202210362702.

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, 2016172022 + ... + 2016182301.

It is an arithmetic number, because the mean of its divisors is an integer number (1820607977286).

Almost surely, 2^{20726301220220} is an apocalyptic number.

20726301220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20726301220220 is an abundant number, since it is smaller than the sum of its proper divisors (22968290234644).

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

20726301220220 is a wasteful number, since it uses less digits than its factorization.

20726301220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032354589 (or 4032354587 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

Adding to 20726301220220 its reverse (2202210362702), we get a palindrome (22928511582922).

The spelling of 20726301220220 in words is "twenty trillion, seven hundred twenty-six billion, three hundred one million, two hundred twenty thousand, two hundred twenty".