21200302131 has 8 divisors (see below), whose sum is σ = 28274856144. Its totient is φ = 14129641440.

The previous prime is 21200302111. The next prime is 21200302171. The reversal of 21200302131 is 13120300212.

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

It is not a de Polignac number, because 21200302131 - 2¹⁷ = 21200171059 is a prime.

It is a super-2 number, since 2×21200302131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21200302131.

It is not an unprimeable number, because it can be changed into a prime (21200302111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960600 + ... + 982421.

It is an arithmetic number, because the mean of its divisors is an integer number (3534357018).

Almost surely, 2^21200302131 is an apocalyptic number.

21200302131 is a deficient number, since it is larger than the sum of its proper divisors (7074554013).

21200302131 is a wasteful number, since it uses less digits than its factorization.

21200302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946661.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21200302131 its reverse (13120300212), we get a palindrome (34320602343).

The spelling of 21200302131 in words is "twenty-one billion, two hundred million, three hundred two thousand, one hundred thirty-one".