1223121310 has 8 divisors (see below), whose sum is σ = 2201618376. Its totient is φ = 489248520.

The previous prime is 1223121299. The next prime is 1223121323. The reversal of 1223121310 is 131213221.

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

It is a super-2 number, since 2×1223121310² = 2992051477952232200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 61156056 + ... + 61156075.

It is an arithmetic number, because the mean of its divisors is an integer number (275202297).

Almost surely, 2^1223121310 is an apocalyptic number.

1223121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223121310 is a deficient number, since it is larger than the sum of its proper divisors (978497066).

1223121310 is a wasteful number, since it uses less digits than its factorization.

1223121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122312138.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1223121310 is about 34973.1512735127. The cubic root of 1223121310 is about 1069.4402143681.

Adding to 1223121310 its reverse (131213221), we get a palindrome (1354334531).

The spelling of 1223121310 in words is "one billion, two hundred twenty-three million, one hundred twenty-one thousand, three hundred ten".