21032021322131 has 2 divisors, whose sum is σ = 21032021322132. Its totient is φ = 21032021322130.

The previous prime is 21032021322121. The next prime is 21032021322149. The reversal of 21032021322131 is 13122312023012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21032021322131 - 2³⁸ = 20757143415187 is a prime.

It is a super-2 number, since 2×21032021322131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21032021322097 and 21032021322106.

It is not a weakly prime, because it can be changed into another prime (21032021322101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516010661065 + 10516010661066.

It is an arithmetic number, because the mean of its divisors is an integer number (10516010661066).

Almost surely, 2^{21032021322131} is an apocalyptic number.

21032021322131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032021322131 is an equidigital number, since it uses as much as digits as its factorization.

21032021322131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21032021322131 its reverse (13122312023012), we get a palindrome (34154333345143).

The spelling of 21032021322131 in words is "twenty-one trillion, thirty-two billion, twenty-one million, three hundred twenty-two thousand, one hundred thirty-one".