1220643334 has 8 divisors (see below), whose sum is σ = 1927331640. Its totient is φ = 578199456.

The previous prime is 1220643331. The next prime is 1220643337. The reversal of 1220643334 is 4333460221.

It is an interprime number because it is at equal distance from previous prime (1220643331) and next prime (1220643337).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220643331) 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, 16061059 + ... + 16061134.

It is an arithmetic number, because the mean of its divisors is an integer number (240916455).

Almost surely, 2^1220643334 is an apocalyptic number.

1220643334 is a deficient number, since it is larger than the sum of its proper divisors (706688306).

1220643334 is a wasteful number, since it uses less digits than its factorization.

1220643334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32122214.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 1220643334 is about 34937.7064788174. The cubic root of 1220643334 is about 1068.7175172280.

The spelling of 1220643334 in words is "one billion, two hundred twenty million, six hundred forty-three thousand, three hundred thirty-four".