21224452141051 has 8 divisors (see below), whose sum is σ = 21718117794560. Its totient is φ = 20730789839592.

The previous prime is 21224452141049. The next prime is 21224452141091. The reversal of 21224452141051 is 15014125442212.

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

It is a cyclic number.

It is not a de Polignac number, because 21224452141051 - 2¹ = 21224452141049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21224452140998 and 21224452141016.

It is not an unprimeable number, because it can be changed into a prime (21224452141021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15745210 + ... + 17039968.

It is an arithmetic number, because the mean of its divisors is an integer number (2714764724320).

Almost surely, 2^{21224452141051} is an apocalyptic number.

21224452141051 is a deficient number, since it is larger than the sum of its proper divisors (493665653509).

21224452141051 is a wasteful number, since it uses less digits than its factorization.

21224452141051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676025.

The product of its (nonzero) digits is 25600, while the sum is 34.

Adding to 21224452141051 its reverse (15014125442212), we get a palindrome (36238577583263).

The spelling of 21224452141051 in words is "twenty-one trillion, two hundred twenty-four billion, four hundred fifty-two million, one hundred forty-one thousand, fifty-one".