20022201021101 has 4 divisors (see below), whose sum is σ = 21199977551772. Its totient is φ = 18844424490432.

The previous prime is 20022201021061. The next prime is 20022201021131. The reversal of 20022201021101 is 10112010222002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17262446136100 + 2759754885001 = 4154810^2 + 1661251^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022201021101 - 2¹⁰ = 20022201020077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022201021131) 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 3 ways as a sum of consecutive naturals, for example, 588888265310 + ... + 588888265343.

It is an arithmetic number, because the mean of its divisors is an integer number (5299994387943).

Almost surely, 2^{20022201021101} is an apocalyptic number.

It is an amenable number.

20022201021101 is a deficient number, since it is larger than the sum of its proper divisors (1177776530671).

20022201021101 is a wasteful number, since it uses less digits than its factorization.

20022201021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177776530670.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20022201021101 its reverse (10112010222002), we get a palindrome (30134211243103).

The spelling of 20022201021101 in words is "twenty trillion, twenty-two billion, two hundred one million, twenty-one thousand, one hundred one".