1221302023 has 2 divisors, whose sum is σ = 1221302024. Its totient is φ = 1221302022.

The previous prime is 1221302021. The next prime is 1221302053. The reversal of 1221302023 is 3202031221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221302023 - 2¹ = 1221302021 is a prime.

Together with 1221302021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1221301988 and 1221302006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221302021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610651011 + 610651012.

It is an arithmetic number, because the mean of its divisors is an integer number (610651012).

Almost surely, 2^1221302023 is an apocalyptic number.

1221302023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221302023 is an equidigital number, since it uses as much as digits as its factorization.

1221302023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1221302023 is about 34947.1318279483. The cubic root of 1221302023 is about 1068.9097180312.

Adding to 1221302023 its reverse (3202031221), we get a palindrome (4423333244).

The spelling of 1221302023 in words is "one billion, two hundred twenty-one million, three hundred two thousand, twenty-three".