20112221010022 has 4 divisors (see below), whose sum is σ = 30168331515036. Its totient is φ = 10056110505010.

The previous prime is 20112221010019. The next prime is 20112221010029. The reversal of 20112221010022 is 22001012221102.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20112221009978 and 20112221010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112221010029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028055252504 + ... + 5028055252507.

It is an arithmetic number, because the mean of its divisors is an integer number (7542082878759).

Almost surely, 2^{20112221010022} is an apocalyptic number.

20112221010022 is a deficient number, since it is larger than the sum of its proper divisors (10056110505014).

20112221010022 is a wasteful number, since it uses less digits than its factorization.

20112221010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056110505013.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20112221010022 its reverse (22001012221102), we get a palindrome (42113233231124).

The spelling of 20112221010022 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-one million, ten thousand, twenty-two".