20010222101 has 4 divisors (see below), whose sum is σ = 20010989772. Its totient is φ = 20009454432.

The previous prime is 20010222083. The next prime is 20010222109. The reversal of 20010222101 is 10122201002.

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 19593000625 + 417221476 = 139975^2 + 20426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010222101 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 (20010222109) 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, 343310 + ... + 397343.

It is an arithmetic number, because the mean of its divisors is an integer number (5002747443).

Almost surely, 2^20010222101 is an apocalyptic number.

It is an amenable number.

20010222101 is a deficient number, since it is larger than the sum of its proper divisors (767671).

20010222101 is an equidigital number, since it uses as much as digits as its factorization.

20010222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767670.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20010222101 its reverse (10122201002), we get a palindrome (30132423103).

The spelling of 20010222101 in words is "twenty billion, ten million, two hundred twenty-two thousand, one hundred one".