121220313321310 has 32 divisors (see below), whose sum is σ = 249367900308480. Its totient is φ = 41561183845152.

The previous prime is 121220313321301. The next prime is 121220313321313. The reversal of 121220313321310 is 13123313022121.

It is a super-2 number, since 2×121220313321310² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220313321313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65953771 + ... + 67766809.

It is an arithmetic number, because the mean of its divisors is an integer number (7792746884640).

Almost surely, 2^{121220313321310} is an apocalyptic number.

121220313321310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220313321310 is an abundant number, since it is smaller than the sum of its proper divisors (128147586987170).

121220313321310 is a wasteful number, since it uses less digits than its factorization.

121220313321310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768200.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 121220313321310 its reverse (13123313022121), we get a palindrome (134343626343431).

The spelling of 121220313321310 in words is "one hundred twenty-one trillion, two hundred twenty billion, three hundred thirteen million, three hundred twenty-one thousand, three hundred ten".