127227491391001 has 4 divisors (see below), whose sum is σ = 127531136955600. Its totient is φ = 126923845826404.

The previous prime is 127227491390981. The next prime is 127227491391031. The reversal of 127227491391001 is 100193194722721.

It is a happy number.

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 not a de Polignac number, because 127227491391001 - 2⁴³ = 118431398368793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127227491391031) 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, 151822781671 + ... + 151822782508.

It is an arithmetic number, because the mean of its divisors is an integer number (31882784238900).

Almost surely, 2^{127227491391001} is an apocalyptic number.

It is an amenable number.

127227491391001 is a deficient number, since it is larger than the sum of its proper divisors (303645564599).

127227491391001 is an equidigital number, since it uses as much as digits as its factorization.

127227491391001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303645564598.

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 127227491391001 in words is "one hundred twenty-seven trillion, two hundred twenty-seven billion, four hundred ninety-one million, three hundred ninety-one thousand, one".