20411222145 has 8 divisors (see below), whose sum is σ = 32657955456. Its totient is φ = 10885985136.

The previous prime is 20411222107. The next prime is 20411222149. The reversal of 20411222145 is 54122211402.

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

It is not a de Polignac number, because 20411222145 - 2¹⁷ = 20411091073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20411222149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680374057 + ... + 680374086.

It is an arithmetic number, because the mean of its divisors is an integer number (4082244432).

Almost surely, 2^20411222145 is an apocalyptic number.

It is an amenable number.

20411222145 is a deficient number, since it is larger than the sum of its proper divisors (12246733311).

20411222145 is a wasteful number, since it uses less digits than its factorization.

20411222145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360748151.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 20411222145 its reverse (54122211402), we get a palindrome (74533433547).

It can be divided in two parts, 20411 and 222145, that added together give a triangular number (242556 = T₆₉₆).

The spelling of 20411222145 in words is "twenty billion, four hundred eleven million, two hundred twenty-two thousand, one hundred forty-five".