21003060207 has 8 divisors (see below), whose sum is σ = 28121253120. Its totient is φ = 13943453720.

The previous prime is 21003060181. The next prime is 21003060209. The reversal of 21003060207 is 70206030012.

It is a happy number.

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 21003060207 - 2¹⁰ = 21003059183 is a prime.

It is a super-2 number, since 2×21003060207² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003060209) 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, 14645769 + ... + 14647202.

It is an arithmetic number, because the mean of its divisors is an integer number (3515156640).

Almost surely, 2^21003060207 is an apocalyptic number.

21003060207 is a deficient number, since it is larger than the sum of its proper divisors (7118192913).

21003060207 is a wasteful number, since it uses less digits than its factorization.

21003060207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29293213.

The product of its (nonzero) digits is 504, while the sum is 21.

Adding to 21003060207 its reverse (70206030012), we get a palindrome (91209090219).

The spelling of 21003060207 in words is "twenty-one billion, three million, sixty thousand, two hundred seven".