21021310150 has 24 divisors (see below), whose sum is σ = 39145340520. Its totient is φ = 8398695360.

The previous prime is 21021310103. The next prime is 21021310157. The reversal of 21021310150 is 5101312012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021310157) 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, 202440 + ... + 288139.

It is an arithmetic number, because the mean of its divisors is an integer number (1631055855).

Almost surely, 2^21021310150 is an apocalyptic number.

21021310150 is a deficient number, since it is larger than the sum of its proper divisors (18124030370).

21021310150 is a wasteful number, since it uses less digits than its factorization.

21021310150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491448 (or 491443 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 21021310150 its reverse (5101312012), we get a palindrome (26122622162).

The spelling of 21021310150 in words is "twenty-one billion, twenty-one million, three hundred ten thousand, one hundred fifty".