21034701 has 8 divisors (see below), whose sum is σ = 31162560. Its totient is φ = 14023116.

The previous prime is 21034687. The next prime is 21034723. The reversal of 21034701 is 10743012.

It is not a de Polignac number, because 21034701 - 2⁵ = 21034669 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389505 + ... + 389558.

It is an arithmetic number, because the mean of its divisors is an integer number (3895320).

Almost surely, 2^21034701 is an apocalyptic number.

It is an amenable number.

21034701 is a deficient number, since it is larger than the sum of its proper divisors (10127859).

21034701 is an equidigital number, since it uses as much as digits as its factorization.

21034701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779072 (or 779066 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 21034701 is about 4586.3603216494. The cubic root of 21034701 is about 276.0442981827.

Adding to 21034701 its reverse (10743012), we get a palindrome (31777713).

The spelling of 21034701 in words is "twenty-one million, thirty-four thousand, seven hundred one".