21010213301131 has 4 divisors (see below), whose sum is σ = 21010283854600. Its totient is φ = 21010142747664.

The previous prime is 21010213301123. The next prime is 21010213301227. The reversal of 21010213301131 is 13110331201012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21010213301131 - 2³ = 21010213301123 is a prime.

It is a super-2 number, since 2×21010213301131² (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 = 21010213301099 and 21010213301108.

It is not an unprimeable number, because it can be changed into a prime (21010213301101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34828146 + ... + 35426263.

It is an arithmetic number, because the mean of its divisors is an integer number (5252570963650).

Almost surely, 2^{21010213301131} is an apocalyptic number.

21010213301131 is a deficient number, since it is larger than the sum of its proper divisors (70553469).

21010213301131 is an equidigital number, since it uses as much as digits as its factorization.

21010213301131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70553468.

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

Adding to 21010213301131 its reverse (13110331201012), we get a palindrome (34120544502143).

The spelling of 21010213301131 in words is "twenty-one trillion, ten billion, two hundred thirteen million, three hundred one thousand, one hundred thirty-one".