20122122221001 has 16 divisors (see below), whose sum is σ = 30255485044800. Its totient is φ = 13214528024544.

The previous prime is 20122122220999. The next prime is 20122122221057. The reversal of 20122122221001 is 10012222122102.

It is a happy number.

20122122221001 is a `hidden beast` number, since 201 + 221 + 22 + 221 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 20122122221001 - 2¹ = 20122122220999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20122122221801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5561668236 + ... + 5561671853.

It is an arithmetic number, because the mean of its divisors is an integer number (1890967815300).

Almost surely, 2^{20122122221001} is an apocalyptic number.

It is an amenable number.

20122122221001 is a deficient number, since it is larger than the sum of its proper divisors (10133362823799).

20122122221001 is a wasteful number, since it uses less digits than its factorization.

20122122221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11123340165 (or 11123340159 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20122122221001 its reverse (10012222122102), we get a palindrome (30134344343103).

The spelling of 20122122221001 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, one".