20122222202101 has 4 divisors (see below), whose sum is σ = 20125939595692. Its totient is φ = 20118504808512.

The previous prime is 20122222202041. The next prime is 20122222202119. The reversal of 20122222202101 is 10120222222102.

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 3765253061476 + 16356969140625 = 1940426^2 + 4044375^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122222202101 - 2¹⁹ = 20122221677813 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 (20122222202141) 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, 1858688676 + ... + 1858699501.

It is an arithmetic number, because the mean of its divisors is an integer number (5031484898923).

Almost surely, 2^{20122222202101} is an apocalyptic number.

It is an amenable number.

20122222202101 is a deficient number, since it is larger than the sum of its proper divisors (3717393591).

20122222202101 is an equidigital number, since it uses as much as digits as its factorization.

20122222202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717393590.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20122222202101 its reverse (10120222222102), we get a palindrome (30242444424203).

The spelling of 20122222202101 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred two thousand, one hundred one".