20122001100121 has 4 divisors (see below), whose sum is σ = 20122224591744. Its totient is φ = 20121777608500.

The previous prime is 20122001100109. The next prime is 20122001100137. The reversal of 20122001100121 is 12100110022102.

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 a de Polignac number, because none of the positive numbers 2^k-20122001100121 is a prime.

It is a super-3 number, since 3×20122001100121³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122001100181) 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, 111610705 + ... + 111790846.

It is an arithmetic number, because the mean of its divisors is an integer number (5030556147936).

Almost surely, 2^{20122001100121} is an apocalyptic number.

It is an amenable number.

20122001100121 is a deficient number, since it is larger than the sum of its proper divisors (223491623).

20122001100121 is an equidigital number, since it uses as much as digits as its factorization.

20122001100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223491622.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20122001100121 its reverse (12100110022102), we get a palindrome (32222111122223).

The spelling of 20122001100121 in words is "twenty trillion, one hundred twenty-two billion, one million, one hundred thousand, one hundred twenty-one".