20211200122020 has 24 divisors (see below), whose sum is σ = 56591360341824. Its totient is φ = 5389653365856.

The previous prime is 20211200122019. The next prime is 20211200122027. The reversal of 20211200122020 is 2022100211202.

It is a super-2 number, since 2×20211200122020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20211200122027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168426667624 + ... + 168426667743.

It is an arithmetic number, because the mean of its divisors is an integer number (2357973347576).

Almost surely, 2^{20211200122020} is an apocalyptic number.

20211200122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211200122020 is an abundant number, since it is smaller than the sum of its proper divisors (36380160219804).

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

20211200122020 is a wasteful number, since it uses less digits than its factorization.

20211200122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336853335379 (or 336853335377 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20211200122020 its reverse (2022100211202), we get a palindrome (22233300333222).

The spelling of 20211200122020 in words is "twenty trillion, two hundred eleven billion, two hundred million, one hundred twenty-two thousand, twenty".