20127766102201 has 4 divisors (see below), whose sum is σ = 20167781542272. Its totient is φ = 20087750662132.

The previous prime is 20127766102183. The next prime is 20127766102313. The reversal of 20127766102201 is 10220166772102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20127766102201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20127766102601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20007719281 + ... + 20007720286.

It is an arithmetic number, because the mean of its divisors is an integer number (5041945385568).

Almost surely, 2^{20127766102201} is an apocalyptic number.

It is an amenable number.

20127766102201 is a deficient number, since it is larger than the sum of its proper divisors (40015440071).

20127766102201 is an equidigital number, since it uses as much as digits as its factorization.

20127766102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40015440070.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 20127766102201 in words is "twenty trillion, one hundred twenty-seven billion, seven hundred sixty-six million, one hundred two thousand, two hundred one".