1197227121 has 8 divisors (see below), whose sum is σ = 1599797664. Its totient is φ = 796404000.

The previous prime is 1197227081. The next prime is 1197227147. The reversal of 1197227121 is 1217227911.

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

It is not a de Polignac number, because 1197227121 - 2¹⁰ = 1197226097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1197227621) 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, 435255 + ... + 437996.

It is an arithmetic number, because the mean of its divisors is an integer number (199974708).

Almost surely, 2^1197227121 is an apocalyptic number.

It is an amenable number.

1197227121 is a deficient number, since it is larger than the sum of its proper divisors (402570543).

1197227121 is an equidigital number, since it uses as much as digits as its factorization.

1197227121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873711.

The product of its digits is 3528, while the sum is 33.

The square root of 1197227121 is about 34600.9699430522. The cubic root of 1197227121 is about 1061.8394313581.

It can be divided in two parts, 11972 and 27121, that added together give a palindrome (39093).

The spelling of 1197227121 in words is "one billion, one hundred ninety-seven million, two hundred twenty-seven thousand, one hundred twenty-one".