121220553772064 has 12 divisors (see below), whose sum is σ = 238652965238814. Its totient is φ = 60610276886016.

The previous prime is 121220553772061. The next prime is 121220553772121. The reversal of 121220553772064 is 460277355022121.

It can be written as a sum of positive squares in only one way, i.e., 99895627248400 + 21324926523664 = 9994780^2 + 4617892^2 .

It is not an unprimeable number, because it can be changed into a prime (121220553772061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1894071152657 + ... + 1894071152720.

Almost surely, 2^{121220553772064} is an apocalyptic number.

It is an amenable number.

121220553772064 is a deficient number, since it is larger than the sum of its proper divisors (117432411466750).

121220553772064 is an equidigital number, since it uses as much as digits as its factorization.

121220553772064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788142305387 (or 3788142305379 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 121220553772064 in words is "one hundred twenty-one trillion, two hundred twenty billion, five hundred fifty-three million, seven hundred seventy-two thousand, sixty-four".