1212310002121 has 16 divisors (see below), whose sum is σ = 1285896268800. Its totient is φ = 1140467613120.

The previous prime is 1212310002097. The next prime is 1212310002143. The reversal of 1212310002121 is 1212000132121.

It is a cyclic number.

It is not a de Polignac number, because 1212310002121 - 2¹³ = 1212309993929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212310002095 and 1212310002104.

It is not an unprimeable number, because it can be changed into a prime (1212310002181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14548251 + ... + 14631343.

It is an arithmetic number, because the mean of its divisors is an integer number (80368516800).

Almost surely, 2^{1212310002121} is an apocalyptic number.

It is an amenable number.

1212310002121 is a deficient number, since it is larger than the sum of its proper divisors (73586266679).

1212310002121 is a wasteful number, since it uses less digits than its factorization.

1212310002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93576.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1212310002121 its reverse (1212000132121), we get a palindrome (2424310134242).

The spelling of 1212310002121 in words is "one trillion, two hundred twelve billion, three hundred ten million, two thousand, one hundred twenty-one".