21214204243033 has 2 divisors, whose sum is σ = 21214204243034. Its totient is φ = 21214204243032.

The previous prime is 21214204243019. The next prime is 21214204243081. The reversal of 21214204243033 is 33034240241212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21193059302464 + 21144940569 = 4603592^2 + 145413^2 .

It is a cyclic number.

It is not a de Polignac number, because 21214204243033 - 2³⁷ = 21076765289561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21214204242986 and 21214204243004.

It is not a weakly prime, because it can be changed into another prime (21214204243333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607102121516 + 10607102121517.

It is an arithmetic number, because the mean of its divisors is an integer number (10607102121517).

Almost surely, 2^{21214204243033} is an apocalyptic number.

It is an amenable number.

21214204243033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214204243033 is an equidigital number, since it uses as much as digits as its factorization.

21214204243033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21214204243033 its reverse (33034240241212), we get a palindrome (54248444484245).

The spelling of 21214204243033 in words is "twenty-one trillion, two hundred fourteen billion, two hundred four million, two hundred forty-three thousand, thirty-three".