121321221310 has 64 divisors (see below), whose sum is σ = 241885699200. Its totient is φ = 43603259392.

The previous prime is 121321221277. The next prime is 121321221319. The reversal of 121321221310 is 13122123121.

It is a super-2 number, since 2×121321221310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321221319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300519 + ... + 577021.

It is an arithmetic number, because the mean of its divisors is an integer number (3779464050).

Almost surely, 2^121321221310 is an apocalyptic number.

121321221310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121321221310 is a deficient number, since it is larger than the sum of its proper divisors (120564477890).

121321221310 is a wasteful number, since it uses less digits than its factorization.

121321221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276645.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121321221310 its reverse (13122123121), we get a palindrome (134443344431).

The spelling of 121321221310 in words is "one hundred twenty-one billion, three hundred twenty-one million, two hundred twenty-one thousand, three hundred ten".