21033402224122 has 8 divisors (see below), whose sum is σ = 31610660157972. Its totient is φ = 10496515504800.

The previous prime is 21033402224113. The next prime is 21033402224183. The reversal of 21033402224122 is 22142220433012.

It can be written as a sum of positive squares in 2 ways, for example, as 20997922357801 + 35479866321 = 4582349^2 + 188361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10092802329 + ... + 10092804412.

Almost surely, 2^{21033402224122} is an apocalyptic number.

21033402224122 is a deficient number, since it is larger than the sum of its proper divisors (10577257933850).

21033402224122 is a wasteful number, since it uses less digits than its factorization.

21033402224122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20185607264.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21033402224122 its reverse (22142220433012), we get a palindrome (43175622657134).

The spelling of 21033402224122 in words is "twenty-one trillion, thirty-three billion, four hundred two million, two hundred twenty-four thousand, one hundred twenty-two".