121263 has 8 divisors (see below), whose sum is σ = 163968. Its totient is φ = 79704.

The previous prime is 121259. The next prime is 121267. The reversal of 121263 is 362121.

It is an interprime number because it is at equal distance from previous prime (121259) and next prime (121267).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121263 - 2² = 121259 is a prime.

121263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (20496).

2¹²¹²⁶³ is an apocalyptic number.

121263 is a deficient number, since it is larger than the sum of its proper divisors (42705).

121263 is an equidigital number, since it uses as much as digits as its factorization.

121263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573.

The product of its digits is 72, while the sum is 15.

The square root of 121263 is about 348.2283733414. The cubic root of 121263 is about 49.4966837897.

Adding to 121263 its sum of digits (15), we get a triangular number (121278 = T₄₉₂).

Adding to 121263 its reverse (362121), we get a palindrome (483384).

It can be divided in two parts, 1212 and 63, that added together give a triangular number (1275 = T₅₀).

The spelling of 121263 in words is "one hundred twenty-one thousand, two hundred sixty-three".