20401041211 has 8 divisors (see below), whose sum is σ = 20969966304. Its totient is φ = 19835513280.

The previous prime is 20401041203. The next prime is 20401041223. The reversal of 20401041211 is 11214010402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20401041211 - 2³ = 20401041203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401041281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837111 + ... + 861136.

It is an arithmetic number, because the mean of its divisors is an integer number (2621245788).

Almost surely, 2^20401041211 is an apocalyptic number.

20401041211 is a deficient number, since it is larger than the sum of its proper divisors (568925093).

20401041211 is a wasteful number, since it uses less digits than its factorization.

20401041211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698581.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20401041211 its reverse (11214010402), we get a palindrome (31615051613).

The spelling of 20401041211 in words is "twenty billion, four hundred one million, forty-one thousand, two hundred eleven".