1227407541121 has 4 divisors (see below), whose sum is σ = 1229763410244. Its totient is φ = 1225051672000.

The previous prime is 1227407541089. The next prime is 1227407541137. The reversal of 1227407541121 is 1211457047221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 740350110096 + 487057431025 = 860436^2 + 697895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227407541121 - 2⁵ = 1227407541089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227407541821) 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, 1177933780 + ... + 1177934821.

It is an arithmetic number, because the mean of its divisors is an integer number (307440852561).

Almost surely, 2^{1227407541121} is an apocalyptic number.

It is an amenable number.

1227407541121 is a deficient number, since it is larger than the sum of its proper divisors (2355869123).

1227407541121 is an equidigital number, since it uses as much as digits as its factorization.

1227407541121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355869122.

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 1227407541121 in words is "one trillion, two hundred twenty-seven billion, four hundred seven million, five hundred forty-one thousand, one hundred twenty-one".