20401143211 has 8 divisors (see below), whose sum is σ = 20430767744. Its totient is φ = 20371538880.

The previous prime is 20401143167. The next prime is 20401143241. The reversal of 20401143211 is 11234110402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401143211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401143241) 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, 4113145 + ... + 4118101.

It is an arithmetic number, because the mean of its divisors is an integer number (2553845968).

Almost surely, 2^20401143211 is an apocalyptic number.

20401143211 is a deficient number, since it is larger than the sum of its proper divisors (29624533).

20401143211 is an equidigital number, since it uses as much as digits as its factorization.

20401143211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20401143211 its reverse (11234110402), we get a palindrome (31635253613).

The spelling of 20401143211 in words is "twenty billion, four hundred one million, one hundred forty-three thousand, two hundred eleven".