20121550672771 has 8 divisors (see below), whose sum is σ = 20391115060800. Its totient is φ = 19853531066880.

The previous prime is 20121550672739. The next prime is 20121550672813. The reversal of 20121550672771 is 17727605512102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20121550672771 - 2⁵ = 20121550672739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121550673771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386169310 + ... + 386221411.

It is an arithmetic number, because the mean of its divisors is an integer number (2548889382600).

Almost surely, 2^{20121550672771} is an apocalyptic number.

20121550672771 is a deficient number, since it is larger than the sum of its proper divisors (269564388029).

20121550672771 is a wasteful number, since it uses less digits than its factorization.

20121550672771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772391069.

The product of its (nonzero) digits is 411600, while the sum is 46.

The spelling of 20121550672771 in words is "twenty trillion, one hundred twenty-one billion, five hundred fifty million, six hundred seventy-two thousand, seven hundred seventy-one".