121211443130 has 16 divisors (see below), whose sum is σ = 231014750760. Its totient is φ = 45632543232.

The previous prime is 121211443127. The next prime is 121211443163. The reversal of 121211443130 is 31344112121.

It can be written as a sum of positive squares in 4 ways, for example, as 118896004969 + 2315438161 = 344813^2 + 48119^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121211443096 and 121211443105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356504075 + ... + 356504414.

Almost surely, 2^121211443130 is an apocalyptic number.

121211443130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211443130 is a deficient number, since it is larger than the sum of its proper divisors (109803307630).

121211443130 is a wasteful number, since it uses less digits than its factorization.

121211443130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713008513.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 121211443130 its reverse (31344112121), we get a palindrome (152555555251).

The spelling of 121211443130 in words is "one hundred twenty-one billion, two hundred eleven million, four hundred forty-three thousand, one hundred thirty".