20022121020001 has 4 divisors (see below), whose sum is σ = 20022187341232. Its totient is φ = 20022054698772.

The previous prime is 20022121019909. The next prime is 20022121020029. The reversal of 20022121020001 is 10002012122002.

It is a happy number.

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 20022121020001 - 2¹¹ = 20022121017953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022121020301) 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, 32705691 + ... + 33312256.

It is an arithmetic number, because the mean of its divisors is an integer number (5005546835308).

Almost surely, 2^{20022121020001} is an apocalyptic number.

It is an amenable number.

20022121020001 is a deficient number, since it is larger than the sum of its proper divisors (66321231).

20022121020001 is an equidigital number, since it uses as much as digits as its factorization.

20022121020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66321230.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20022121020001 its reverse (10002012122002), we get a palindrome (30024133142003).

The spelling of 20022121020001 in words is "twenty trillion, twenty-two billion, one hundred twenty-one million, twenty thousand, one".