121220123303012 has 36 divisors (see below), whose sum is σ = 223232761566780. Its totient is φ = 57528193918272.

The previous prime is 121220123303011. The next prime is 121220123303023. The reversal of 121220123303012 is 210303321022121.

It can be written as a sum of positive squares in 2 ways, for example, as 36803829691456 + 84416293611556 = 6066616^2 + 9187834^2 .

It is not an unprimeable number, because it can be changed into a prime (121220123303011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149696903 + ... + 150504494.

Almost surely, 2^{121220123303012} is an apocalyptic number.

It is an amenable number.

121220123303012 is a deficient number, since it is larger than the sum of its proper divisors (102012638263768).

121220123303012 is a wasteful number, since it uses less digits than its factorization.

121220123303012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300201548 (or 300201487 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 121220123303012 its reverse (210303321022121), we get a palindrome (331523444325133).

The spelling of 121220123303012 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred twenty-three million, three hundred three thousand, twelve".