20401114211 has 4 divisors (see below), whose sum is σ = 20401407000. Its totient is φ = 20400821424.

The previous prime is 20401114193. The next prime is 20401114243. The reversal of 20401114211 is 11241110402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20401114211 - 2¹⁸ = 20400852067 is a prime.

It is a super-2 number, since 2×20401114211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20401114211.

It is not an unprimeable number, because it can be changed into a prime (20401114711) 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, 25055 + ... + 203543.

It is an arithmetic number, because the mean of its divisors is an integer number (5100351750).

Almost surely, 2^20401114211 is an apocalyptic number.

20401114211 is a deficient number, since it is larger than the sum of its proper divisors (292789).

20401114211 is a wasteful number, since it uses less digits than its factorization.

20401114211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292788.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20401114211 its reverse (11241110402), we get a palindrome (31642224613).

The spelling of 20401114211 in words is "twenty billion, four hundred one million, one hundred fourteen thousand, two hundred eleven".