20001121000211 has 16 divisors (see below), whose sum is σ = 22160624328864. Its totient is φ = 17937875222784.

The previous prime is 20001121000199. The next prime is 20001121000229. The reversal of 20001121000211 is 11200012110002.

It is a cyclic number.

It is not a de Polignac number, because 20001121000211 - 2¹⁰ = 20001120999187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001121000192 and 20001121000201.

It is not an unprimeable number, because it can be changed into a prime (20001121000711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157219976 + ... + 157347141.

It is an arithmetic number, because the mean of its divisors is an integer number (1385039020554).

Almost surely, 2^{20001121000211} is an apocalyptic number.

20001121000211 is a deficient number, since it is larger than the sum of its proper divisors (2159503328653).

20001121000211 is a wasteful number, since it uses less digits than its factorization.

20001121000211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314567270.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001121000211 its reverse (11200012110002), we get a palindrome (31201133110213).

The spelling of 20001121000211 in words is "twenty trillion, one billion, one hundred twenty-one million, two hundred eleven", and thus it is an aban number.