20401000211 has 32 divisors (see below), whose sum is σ = 21977088000. Its totient is φ = 18903456000.

The previous prime is 20401000199. The next prime is 20401000231. The reversal of 20401000211 is 11200010402.

It is a cyclic number.

It is not a de Polignac number, because 20401000211 - 2²² = 20396805907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20401000192 and 20401000201.

It is not an unprimeable number, because it can be changed into a prime (20401000231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19980881 + ... + 19981901.

It is an arithmetic number, because the mean of its divisors is an integer number (686784000).

Almost surely, 2^20401000211 is an apocalyptic number.

20401000211 is a deficient number, since it is larger than the sum of its proper divisors (1576087789).

20401000211 is a wasteful number, since it uses less digits than its factorization.

20401000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20401000211 its reverse (11200010402), we get a palindrome (31601010613).

The spelling of 20401000211 in words is "twenty billion, four hundred one million, two hundred eleven", and thus it is an aban number.