1201221210023 has 2 divisors, whose sum is σ = 1201221210024. Its totient is φ = 1201221210022.

The previous prime is 1201221210019. The next prime is 1201221210149. The reversal of 1201221210023 is 3200121221021.

It is a weak prime.

It is an emirp because it is prime and its reverse (3200121221021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201221210023 - 2² = 1201221210019 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201221209983 and 1201221210010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201221210223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610605011 + 600610605012.

It is an arithmetic number, because the mean of its divisors is an integer number (600610605012).

Almost surely, 2^{1201221210023} is an apocalyptic number.

1201221210023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201221210023 is an equidigital number, since it uses as much as digits as its factorization.

1201221210023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1201221210023 its reverse (3200121221021), we get a palindrome (4401342431044).

The spelling of 1201221210023 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred ten thousand, twenty-three".