123220321201 has 4 divisors (see below), whose sum is σ = 127195170304. Its totient is φ = 119245472100.

The previous prime is 123220321171. The next prime is 123220321207. The reversal of 123220321201 is 102123022321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102123022321 = 89 ⋅1147449689.

It is a cyclic number.

It is not a de Polignac number, because 123220321201 - 2¹¹ = 123220319153 is a prime.

It is a super-2 number, since 2×123220321201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123220321207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987424505 + ... + 1987424566.

It is an arithmetic number, because the mean of its divisors is an integer number (31798792576).

Almost surely, 2^123220321201 is an apocalyptic number.

It is an amenable number.

123220321201 is a deficient number, since it is larger than the sum of its proper divisors (3974849103).

123220321201 is an equidigital number, since it uses as much as digits as its factorization.

123220321201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974849102.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123220321201 its reverse (102123022321), we get a palindrome (225343343522).

The spelling of 123220321201 in words is "one hundred twenty-three billion, two hundred twenty million, three hundred twenty-one thousand, two hundred one".