1223375771 has 2 divisors, whose sum is σ = 1223375772. Its totient is φ = 1223375770.

The previous prime is 1223375729. The next prime is 1223375809. The reversal of 1223375771 is 1775733221.

It is an a-pointer prime, because the next prime (1223375809) can be obtained adding 1223375771 to its sum of digits (38).

It is a strong prime.

It is an emirp because it is prime and its reverse (1775733221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223375771 - 2⁶ = 1223375707 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223375711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611687885 + 611687886.

It is an arithmetic number, because the mean of its divisors is an integer number (611687886).

Almost surely, 2^1223375771 is an apocalyptic number.

1223375771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223375771 is an equidigital number, since it uses as much as digits as its factorization.

1223375771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 38.

The square root of 1223375771 is about 34976.7890321567. The cubic root of 1223375771 is about 1069.5143721682.

The spelling of 1223375771 in words is "one billion, two hundred twenty-three million, three hundred seventy-five thousand, seven hundred seventy-one".