21030701 has 8 divisors (see below), whose sum is σ = 22183200. Its totient is φ = 19882800.

The previous prime is 21030677. The next prime is 21030703. The reversal of 21030701 is 10703012.

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

It is a cyclic number.

It is not a de Polignac number, because 21030701 - 2⁶ = 21030637 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030703) 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, 12530 + ... + 14108.

It is an arithmetic number, because the mean of its divisors is an integer number (2772900).

Almost surely, 2^21030701 is an apocalyptic number.

It is an amenable number.

21030701 is a deficient number, since it is larger than the sum of its proper divisors (1152499).

21030701 is a wasteful number, since it uses less digits than its factorization.

21030701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 21030701 is about 4585.9242252789. The cubic root of 21030701 is about 276.0267993651.

Adding to 21030701 its reverse (10703012), we get a palindrome (31733713).

The spelling of 21030701 in words is "twenty-one million, thirty thousand, seven hundred one".