21011201303131 has 16 divisors (see below), whose sum is σ = 22684708101888. Its totient is φ = 19345878144000.

The previous prime is 21011201303129. The next prime is 21011201303149. The reversal of 21011201303131 is 13130310211012.

It is a cyclic number.

It is not a de Polignac number, because 21011201303131 - 2¹ = 21011201303129 is a prime.

It is a super-2 number, since 2×21011201303131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21011201303099 and 21011201303108.

It is not an unprimeable number, because it can be changed into a prime (21011201303731) 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 15 ways as a sum of consecutive naturals, for example, 187492086 + ... + 187604116.

It is an arithmetic number, because the mean of its divisors is an integer number (1417794256368).

Almost surely, 2^{21011201303131} is an apocalyptic number.

21011201303131 is a deficient number, since it is larger than the sum of its proper divisors (1673506798757).

21011201303131 is a wasteful number, since it uses less digits than its factorization.

21011201303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148422.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21011201303131 its reverse (13130310211012), we get a palindrome (34141511514143).

The spelling of 21011201303131 in words is "twenty-one trillion, eleven billion, two hundred one million, three hundred three thousand, one hundred thirty-one".