1221477113 has 8 divisors (see below), whose sum is σ = 1246582080. Its totient is φ = 1196591760.

The previous prime is 1221477079. The next prime is 1221477119. The reversal of 1221477113 is 3117741221.

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

It is a cyclic number.

It is not a de Polignac number, because 1221477113 - 2¹² = 1221473017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221477119) 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, 43643 + ... + 65936.

It is an arithmetic number, because the mean of its divisors is an integer number (155822760).

Almost surely, 2^1221477113 is an apocalyptic number.

It is an amenable number.

1221477113 is a deficient number, since it is larger than the sum of its proper divisors (25104967).

1221477113 is a wasteful number, since it uses less digits than its factorization.

1221477113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109807.

The product of its digits is 2352, while the sum is 29.

The square root of 1221477113 is about 34949.6368078411. The cubic root of 1221477113 is about 1068.9607964311.

The spelling of 1221477113 in words is "one billion, two hundred twenty-one million, four hundred seventy-seven thousand, one hundred thirteen".