23150350520221 has 2 divisors, whose sum is σ = 23150350520222. Its totient is φ = 23150350520220.

The previous prime is 23150350520203. The next prime is 23150350520261. The reversal of 23150350520221 is 12202505305132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20456977197721 + 2693373322500 = 4522939^2 + 1641150^2 .

It is a cyclic number.

It is not a de Polignac number, because 23150350520221 - 2⁷ = 23150350520093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23150350520201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11575175260110 + 11575175260111.

It is an arithmetic number, because the mean of its divisors is an integer number (11575175260111).

Almost surely, 2^{23150350520221} is an apocalyptic number.

It is an amenable number.

23150350520221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23150350520221 is an equidigital number, since it uses as much as digits as its factorization.

23150350520221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 23150350520221 its reverse (12202505305132), we get a palindrome (35352855825353).

The spelling of 23150350520221 in words is "twenty-three trillion, one hundred fifty billion, three hundred fifty million, five hundred twenty thousand, two hundred twenty-one".