20122100444 has 6 divisors (see below), whose sum is σ = 35213675784. Its totient is φ = 10061050220.

The previous prime is 20122100443. The next prime is 20122100477. The reversal of 20122100444 is 44400122102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122100443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515262552 + ... + 2515262559.

It is an arithmetic number, because the mean of its divisors is an integer number (5868945964).

Almost surely, 2^20122100444 is an apocalyptic number.

It is an amenable number.

20122100444 is a deficient number, since it is larger than the sum of its proper divisors (15091575340).

20122100444 is a wasteful number, since it uses less digits than its factorization.

20122100444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030525115 (or 5030525113 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20122100444 its reverse (44400122102), we get a palindrome (64522222546).

The spelling of 20122100444 in words is "twenty billion, one hundred twenty-two million, one hundred thousand, four hundred forty-four".