1221004701 has 12 divisors (see below), whose sum is σ = 2015626912. Its totient is φ = 697716936.

The previous prime is 1221004693. The next prime is 1221004709. The reversal of 1221004701 is 1074001221.

It is an interprime number because it is at equal distance from previous prime (1221004693) and next prime (1221004709).

It is not a de Polignac number, because 1221004701 - 2³ = 1221004693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221004709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9690451 + ... + 9690576.

Almost surely, 2^1221004701 is an apocalyptic number.

It is an amenable number.

1221004701 is a deficient number, since it is larger than the sum of its proper divisors (794622211).

1221004701 is a wasteful number, since it uses less digits than its factorization.

1221004701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19381040 (or 19381037 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 1221004701 is about 34942.8776863040. The cubic root of 1221004701 is about 1068.8229701281.

Adding to 1221004701 its reverse (1074001221), we get a palindrome (2295005922).

The spelling of 1221004701 in words is "one billion, two hundred twenty-one million, four thousand, seven hundred one".