20311010000121 has 4 divisors (see below), whose sum is σ = 27081346666832. Its totient is φ = 13540673333412.

The previous prime is 20311010000117. The next prime is 20311010000147. The reversal of 20311010000121 is 12100001011302.

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 not a de Polignac number, because 20311010000121 - 2² = 20311010000117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311010000097 and 20311010000106.

It is not an unprimeable number, because it can be changed into a prime (20311010000921) 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, 3385168333351 + ... + 3385168333356.

It is an arithmetic number, because the mean of its divisors is an integer number (6770336666708).

Almost surely, 2^{20311010000121} is an apocalyptic number.

It is an amenable number.

20311010000121 is a deficient number, since it is larger than the sum of its proper divisors (6770336666711).

20311010000121 is an equidigital number, since it uses as much as digits as its factorization.

20311010000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770336666710.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20311010000121 its reverse (12100001011302), we get a palindrome (32411011011423).

The spelling of 20311010000121 in words is "twenty trillion, three hundred eleven billion, ten million, one hundred twenty-one", and thus it is an aban number.