20000010121001 has 4 divisors (see below), whose sum is σ = 20005518251904. Its totient is φ = 19994501990100.

The previous prime is 20000010120953. The next prime is 20000010121033. The reversal of 20000010121001 is 10012101000002.

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-20000010121001 is a prime.

It is a super-2 number, since 2×20000010121001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20000010121001.

It is not an unprimeable number, because it can be changed into a prime (20000010124001) 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, 2754060005 + ... + 2754067266.

It is an arithmetic number, because the mean of its divisors is an integer number (5001379562976).

Almost surely, 2^{20000010121001} is an apocalyptic number.

It is an amenable number.

20000010121001 is a deficient number, since it is larger than the sum of its proper divisors (5508130903).

20000010121001 is an equidigital number, since it uses as much as digits as its factorization.

20000010121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508130902.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20000010121001 its reverse (10012101000002), we get a palindrome (30012111121003).

The spelling of 20000010121001 in words is "twenty trillion, ten million, one hundred twenty-one thousand, one".