20122102001 has 4 divisors (see below), whose sum is σ = 20129527104. Its totient is φ = 20114676900.

The previous prime is 20122101997. The next prime is 20122102031. The reversal of 20122102001 is 10020122102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20122102001 - 2² = 20122101997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122102031) 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, 3708485 + ... + 3713906.

It is an arithmetic number, because the mean of its divisors is an integer number (5032381776).

Almost surely, 2^20122102001 is an apocalyptic number.

It is an amenable number.

20122102001 is a deficient number, since it is larger than the sum of its proper divisors (7425103).

20122102001 is an equidigital number, since it uses as much as digits as its factorization.

20122102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425102.

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

Adding to 20122102001 its reverse (10020122102), we get a palindrome (30142224103).

The spelling of 20122102001 in words is "twenty billion, one hundred twenty-two million, one hundred two thousand, one".