1227001481 has 4 divisors (see below), whose sum is σ = 1244283264. Its totient is φ = 1209719700.

The previous prime is 1227001471. The next prime is 1227001487. The reversal of 1227001481 is 1841007221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1841007221 = 73 ⋅25219277.

It is a cyclic number.

It is not a de Polignac number, because 1227001481 - 2⁶ = 1227001417 is a prime.

It is a super-2 number, since 2×1227001481² = 3011065268752386722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1227001481.

It is not an unprimeable number, because it can be changed into a prime (1227001487) 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, 8640785 + ... + 8640926.

It is an arithmetic number, because the mean of its divisors is an integer number (311070816).

Almost surely, 2^1227001481 is an apocalyptic number.

It is an amenable number.

1227001481 is a deficient number, since it is larger than the sum of its proper divisors (17281783).

1227001481 is an equidigital number, since it uses as much as digits as its factorization.

1227001481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17281782.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1227001481 is about 35028.5809161604. The cubic root of 1227001481 is about 1070.5699007916.

The spelling of 1227001481 in words is "one billion, two hundred twenty-seven million, one thousand, four hundred eighty-one".