20022201021021 has 16 divisors (see below), whose sum is σ = 28143766437888. Its totient is φ = 12642707574000.

The previous prime is 20022201020981. The next prime is 20022201021061. The reversal of 20022201021021 is 12012010222002.

It is an interprime number because it is at equal distance from previous prime (20022201020981) and next prime (20022201021061).

It is not a de Polignac number, because 20022201021021 - 2²¹ = 20022198923869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022201021061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2290341205 + ... + 2290349946.

It is an arithmetic number, because the mean of its divisors is an integer number (1758985402368).

Almost surely, 2^{20022201021021} is an apocalyptic number.

It is an amenable number.

20022201021021 is a deficient number, since it is larger than the sum of its proper divisors (8121565416867).

20022201021021 is a wasteful number, since it uses less digits than its factorization.

20022201021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580691232.

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

Adding to 20022201021021 its reverse (12012010222002), we get a palindrome (32034211243023).

The spelling of 20022201021021 in words is "twenty trillion, twenty-two billion, two hundred one million, twenty-one thousand, twenty-one".