1210000121012 has 24 divisors (see below), whose sum is σ = 2144839804800. Its totient is φ = 597192575616.

The previous prime is 1210000120991. The next prime is 1210000121017. The reversal of 1210000121012 is 2101210000121.

It is a junction number, because it is equal to n+sod(n) for n = 1210000120984 and 1210000121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210000121017) 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 7 ways as a sum of consecutive naturals, for example, 793628 + ... + 1746380.

It is an arithmetic number, because the mean of its divisors is an integer number (89368325200).

Almost surely, 2^{1210000121012} is an apocalyptic number.

It is an amenable number.

1210000121012 is a deficient number, since it is larger than the sum of its proper divisors (934839683788).

1210000121012 is a wasteful number, since it uses less digits than its factorization.

1210000121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956855 (or 956853 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1210000121012 its reverse (2101210000121), we get a palindrome (3311210121133).

The spelling of 1210000121012 in words is "one trillion, two hundred ten billion, one hundred twenty-one thousand, twelve".