1211117673 has 8 divisors (see below), whose sum is σ = 1615876288. Its totient is φ = 806885424.

The previous prime is 1211117651. The next prime is 1211117711. The reversal of 1211117673 is 3767111121.

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

It is not a de Polignac number, because 1211117673 - 2²⁸ = 942682217 is a prime.

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 1211117673.

It is not an unprimeable number, because it can be changed into a prime (1211117273) 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, 126190 + ... + 135447.

It is an arithmetic number, because the mean of its divisors is an integer number (201984536).

Almost surely, 2^1211117673 is an apocalyptic number.

It is an amenable number.

1211117673 is a deficient number, since it is larger than the sum of its proper divisors (404758615).

1211117673 is a wasteful number, since it uses less digits than its factorization.

1211117673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263183.

The product of its digits is 1764, while the sum is 30.

The square root of 1211117673 is about 34801.1159734857. The cubic root of 1211117673 is about 1065.9302335520.

Adding to 1211117673 its reverse (3767111121), we get a palindrome (4978228794).

The spelling of 1211117673 in words is "one billion, two hundred eleven million, one hundred seventeen thousand, six hundred seventy-three".