121201201012 has 6 divisors (see below), whose sum is σ = 212102101778. Its totient is φ = 60600600504.

The previous prime is 121201201007. The next prime is 121201201013. The reversal of 121201201012 is 210102102121.

It can be written as a sum of positive squares in only one way, i.e., 107429239696 + 13771961316 = 327764^2 + 117354^2 .

It is a super-2 number, since 2×121201201012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121201200983 and 121201201001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201201013) 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 as a sum of consecutive naturals, namely, 15150150123 + ... + 15150150130.

Almost surely, 2^121201201012 is an apocalyptic number.

It is an amenable number.

121201201012 is a deficient number, since it is larger than the sum of its proper divisors (90900900766).

121201201012 is a wasteful number, since it uses less digits than its factorization.

121201201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30300300257 (or 30300300255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121201201012 its reverse (210102102121), we get a palindrome (331303303133).

The spelling of 121201201012 in words is "one hundred twenty-one billion, two hundred one million, two hundred one thousand, twelve".