20212221200001 has 64 divisors (see below), whose sum is σ = 29299790499840. Its totient is φ = 12363237089280.

The previous prime is 20212221199987. The next prime is 20212221200051. The reversal of 20212221200001 is 10000212221202.

It is not a de Polignac number, because 20212221200001 - 2¹⁴ = 20212221183617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212221200051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27676521 + ... + 28397433.

It is an arithmetic number, because the mean of its divisors is an integer number (457809226560).

Almost surely, 2^{20212221200001} is an apocalyptic number.

It is an amenable number.

20212221200001 is a deficient number, since it is larger than the sum of its proper divisors (9087569299839).

20212221200001 is a wasteful number, since it uses less digits than its factorization.

20212221200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721166.

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

Adding to 20212221200001 its reverse (10000212221202), we get a palindrome (30212433421203).

It can be divided in two parts, 2021222 and 1200001, that added together give a palindrome (3221223).

The spelling of 20212221200001 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, two hundred thousand, one".