21062150501 has 16 divisors (see below), whose sum is σ = 24185952000. Its totient is φ = 17967206400.

The previous prime is 21062150491. The next prime is 21062150509. The reversal of 21062150501 is 10505126012.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21062150501 is a prime.

It is a super-2 number, since 2×21062150501² (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 (21062150509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2336000 + ... + 2344998.

It is an arithmetic number, because the mean of its divisors is an integer number (1511622000).

Almost surely, 2^21062150501 is an apocalyptic number.

It is an amenable number.

21062150501 is a deficient number, since it is larger than the sum of its proper divisors (3123801499).

21062150501 is a wasteful number, since it uses less digits than its factorization.

21062150501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10564.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 21062150501 its reverse (10505126012), we get a palindrome (31567276513).

The spelling of 21062150501 in words is "twenty-one billion, sixty-two million, one hundred fifty thousand, five hundred one".