20010200222101 has 4 divisors (see below), whose sum is σ = 20030031937900. Its totient is φ = 19990368506304.

The previous prime is 20010200222039. The next prime is 20010200222147. The reversal of 20010200222101 is 10122200201002.

It is a happy number.

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 8566011900625 + 11444188321476 = 2926775^2 + 3382926^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010200222101 - 2¹¹ = 20010200220053 is a prime.

It is a super-2 number, since 2×20010200222101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010200222161) 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, 9915856386 + ... + 9915858403.

It is an arithmetic number, because the mean of its divisors is an integer number (5007507984475).

Almost surely, 2^{20010200222101} is an apocalyptic number.

It is an amenable number.

20010200222101 is a deficient number, since it is larger than the sum of its proper divisors (19831715799).

20010200222101 is a wasteful number, since it uses less digits than its factorization.

20010200222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19831715798.

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

Adding to 20010200222101 its reverse (10122200201002), we get a palindrome (30132400423103).

The spelling of 20010200222101 in words is "twenty trillion, ten billion, two hundred million, two hundred twenty-two thousand, one hundred one".