23405420202211 has 16 divisors (see below), whose sum is σ = 25651934733600. Its totient is φ = 21278102457600.

The previous prime is 23405420202119. The next prime is 23405420202233. The reversal of 23405420202211 is 11220202450432.

It is a cyclic number.

It is not a de Polignac number, because 23405420202211 - 2⁷ = 23405420202083 is a prime.

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 23405420202211.

It is not an unprimeable number, because it can be changed into a prime (23405420302211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246226816 + ... + 246321853.

It is an arithmetic number, because the mean of its divisors is an integer number (1603245920850).

Almost surely, 2^{23405420202211} is an apocalyptic number.

23405420202211 is a deficient number, since it is larger than the sum of its proper divisors (2246514531389).

23405420202211 is a wasteful number, since it uses less digits than its factorization.

23405420202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492548790.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 23405420202211 its reverse (11220202450432), we get a palindrome (34625622652643).

The spelling of 23405420202211 in words is "twenty-three trillion, four hundred five billion, four hundred twenty million, two hundred two thousand, two hundred eleven".