21214221431033 has 4 divisors (see below), whose sum is σ = 21401957903988. Its totient is φ = 21026484958080.

The previous prime is 21214221431021. The next prime is 21214221431063. The reversal of 21214221431033 is 33013412241212.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8776269975529 + 12437951455504 = 2962477^2 + 3526748^2 .

It is a cyclic number.

It is not a de Polignac number, because 21214221431033 - 2³⁴ = 21197041561849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21214221430987 and 21214221431005.

It is not an unprimeable number, because it can be changed into a prime (21214221431063) 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, 93868236308 + ... + 93868236533.

It is an arithmetic number, because the mean of its divisors is an integer number (5350489475997).

Almost surely, 2^{21214221431033} is an apocalyptic number.

It is an amenable number.

21214221431033 is a deficient number, since it is larger than the sum of its proper divisors (187736472955).

21214221431033 is a wasteful number, since it uses less digits than its factorization.

21214221431033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187736472954.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21214221431033 its reverse (33013412241212), we get a palindrome (54227633672245).

The spelling of 21214221431033 in words is "twenty-one trillion, two hundred fourteen billion, two hundred twenty-one million, four hundred thirty-one thousand, thirty-three".