1220707707 has 8 divisors (see below), whose sum is σ = 1638389760. Its totient is φ = 808415400.

The previous prime is 1220707703. The next prime is 1220707711. The reversal of 1220707707 is 7077070221.

It is an interprime number because it is at equal distance from previous prime (1220707703) and next prime (1220707711).

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

It is not a de Polignac number, because 1220707707 - 2² = 1220707703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220707703) 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, 1346907 + ... + 1347812.

It is an arithmetic number, because the mean of its divisors is an integer number (204798720).

Almost surely, 2^1220707707 is an apocalyptic number.

1220707707 is a deficient number, since it is larger than the sum of its proper divisors (417682053).

1220707707 is a wasteful number, since it uses less digits than its factorization.

1220707707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694873.

The product of its (nonzero) digits is 9604, while the sum is 33.

The square root of 1220707707 is about 34938.6277206189. The cubic root of 1220707707 is about 1068.7363038633.

Adding to 1220707707 its reverse (7077070221), we get a palindrome (8297777928).

The spelling of 1220707707 in words is "one billion, two hundred twenty million, seven hundred seven thousand, seven hundred seven".