1221005014 has 8 divisors (see below), whose sum is σ = 1843173648. Its totient is φ = 606613800.

The previous prime is 1221004913. The next prime is 1221005041. The reversal of 1221005014 is 4105001221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943962 + ... + 1944589.

It is an arithmetic number, because the mean of its divisors is an integer number (230396706).

Almost surely, 2^1221005014 is an apocalyptic number.

1221005014 is a deficient number, since it is larger than the sum of its proper divisors (622168634).

1221005014 is a wasteful number, since it uses less digits than its factorization.

1221005014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888710.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1221005014 is about 34942.8821650419. The cubic root of 1221005014 is about 1068.8230614576.

Adding to 1221005014 its reverse (4105001221), we get a palindrome (5326006235).

The spelling of 1221005014 in words is "one billion, two hundred twenty-one million, five thousand, fourteen".