121311221232130 has 16 divisors (see below), whose sum is σ = 218394699864120. Its totient is φ = 48516821460352.

The previous prime is 121311221232121. The next prime is 121311221232133. The reversal of 121311221232130 is 31232122113121.

It can be written as a sum of positive squares in 4 ways, for example, as 92470744701241 + 28840476530889 = 9616171^2 + 5370333^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121311221232095 and 121311221232104.

It is not an unprimeable number, because it can be changed into a prime (121311221232133) 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, 958312609 + ... + 958439188.

Almost surely, 2^{121311221232130} is an apocalyptic number.

121311221232130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121311221232130 is a deficient number, since it is larger than the sum of its proper divisors (97083478631990).

121311221232130 is a wasteful number, since it uses less digits than its factorization.

121311221232130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916758133.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 121311221232130 its reverse (31232122113121), we get a palindrome (152543343345251).

The spelling of 121311221232130 in words is "one hundred twenty-one trillion, three hundred eleven billion, two hundred twenty-one million, two hundred thirty-two thousand, one hundred thirty".