121222263 has 4 divisors (see below), whose sum is σ = 161629688. Its totient is φ = 80814840.

The previous prime is 121222253. The next prime is 121222273. The reversal of 121222263 is 362222121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362222121 = 3 ⋅120740707.

It is an interprime number because it is at equal distance from previous prime (121222253) and next prime (121222273).

It is not a de Polignac number, because 121222263 - 2⁸ = 121222007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20203708 + ... + 20203713.

It is an arithmetic number, because the mean of its divisors is an integer number (40407422).

Almost surely, 2^121222263 is an apocalyptic number.

121222263 is a deficient number, since it is larger than the sum of its proper divisors (40407425).

121222263 is an equidigital number, since it uses as much as digits as its factorization.

121222263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40407424.

The product of its digits is 576, while the sum is 21.

The square root of 121222263 is about 11010.0982284446. The cubic root of 121222263 is about 494.9114054279.

Adding to 121222263 its reverse (362222121), we get a palindrome (483444384).

The spelling of 121222263 in words is "one hundred twenty-one million, two hundred twenty-two thousand, two hundred sixty-three".