20201000211211 has 4 divisors (see below), whose sum is σ = 20203923239424. Its totient is φ = 20198077183000.

The previous prime is 20201000211209. The next prime is 20201000211233. The reversal of 20201000211211 is 11211200010202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20201000211211 - 2¹ = 20201000211209 is a prime.

It is a super-2 number, since 2×20201000211211² (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 = 20201000211191 and 20201000211200.

It is not an unprimeable number, because it can be changed into a prime (20201000215211) 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, 1461503740 + ... + 1461517561.

It is an arithmetic number, because the mean of its divisors is an integer number (5050980809856).

Almost surely, 2^{20201000211211} is an apocalyptic number.

20201000211211 is a deficient number, since it is larger than the sum of its proper divisors (2923028213).

20201000211211 is an equidigital number, since it uses as much as digits as its factorization.

20201000211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923028212.

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

Adding to 20201000211211 its reverse (11211200010202), we get a palindrome (31412200221413).

The spelling of 20201000211211 in words is "twenty trillion, two hundred one billion, two hundred eleven thousand, two hundred eleven".