20021222020201 has 4 divisors (see below), whose sum is σ = 21074970547600. Its totient is φ = 18967473492804.

The previous prime is 20021222020157. The next prime is 20021222020223. The reversal of 20021222020201 is 10202022212002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20021222020201 - 2²³ = 20021213631593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021222020801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526874263671 + ... + 526874263708.

It is an arithmetic number, because the mean of its divisors is an integer number (5268742636900).

Almost surely, 2^{20021222020201} is an apocalyptic number.

It is an amenable number.

20021222020201 is a deficient number, since it is larger than the sum of its proper divisors (1053748527399).

20021222020201 is a wasteful number, since it uses less digits than its factorization.

20021222020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053748527398.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20021222020201 its reverse (10202022212002), we get a palindrome (30223244232203).

It can be divided in two parts, 20021 and 222020201, that added together give a palindrome (222040222).

The spelling of 20021222020201 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, twenty thousand, two hundred one".