21150220060423 has 8 divisors (see below), whose sum is σ = 21153663850176. Its totient is φ = 21146776543200.

The previous prime is 21150220060399. The next prime is 21150220060427. The reversal of 21150220060423 is 32406002205112.

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 21150220060423 - 2⁵ = 21150220060391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21150220060391 and 21150220060400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150220060427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200360565 + ... + 200466097.

It is an arithmetic number, because the mean of its divisors is an integer number (2644207981272).

Almost surely, 2^{21150220060423} is an apocalyptic number.

21150220060423 is a deficient number, since it is larger than the sum of its proper divisors (3443789753).

21150220060423 is a wasteful number, since it uses less digits than its factorization.

21150220060423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136265.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21150220060423 its reverse (32406002205112), we get a palindrome (53556222265535).

The spelling of 21150220060423 in words is "twenty-one trillion, one hundred fifty billion, two hundred twenty million, sixty thousand, four hundred twenty-three".