20211000110121 has 4 divisors (see below), whose sum is σ = 26948000146832. Its totient is φ = 13474000073412.

The previous prime is 20211000110117. The next prime is 20211000110137. The reversal of 20211000110121 is 12101100011202.

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 20211000110121 - 2² = 20211000110117 is a prime.

It is a super-2 number, since 2×20211000110121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211000110097 and 20211000110106.

It is not an unprimeable number, because it can be changed into a prime (20211000180121) 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, 3368500018351 + ... + 3368500018356.

It is an arithmetic number, because the mean of its divisors is an integer number (6737000036708).

Almost surely, 2^{20211000110121} is an apocalyptic number.

It is an amenable number.

20211000110121 is a deficient number, since it is larger than the sum of its proper divisors (6737000036711).

20211000110121 is an equidigital number, since it uses as much as digits as its factorization.

20211000110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737000036710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20211000110121 its reverse (12101100011202), we get a palindrome (32312100121323).

The spelling of 20211000110121 in words is "twenty trillion, two hundred eleven billion, one hundred ten thousand, one hundred twenty-one".