21150204041121 has 8 divisors (see below), whose sum is σ = 28474061104320. Its totient is φ = 13963241502672.

The previous prime is 21150204041069. The next prime is 21150204041149. The reversal of 21150204041121 is 12114040205112.

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

It is not a de Polignac number, because 21150204041121 - 2¹⁴ = 21150204024737 is a prime.

It is a super-2 number, since 2×21150204041121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21150204041091 and 21150204041100.

It is not an unprimeable number, because it can be changed into a prime (21150204041321) 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, 34223630826 + ... + 34223631443.

It is an arithmetic number, because the mean of its divisors is an integer number (3559257638040).

Almost surely, 2^{21150204041121} is an apocalyptic number.

It is an amenable number.

21150204041121 is a deficient number, since it is larger than the sum of its proper divisors (7323857063199).

21150204041121 is a wasteful number, since it uses less digits than its factorization.

21150204041121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68447262375.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 21150204041121 its reverse (12114040205112), we get a palindrome (33264244246233).

The spelling of 21150204041121 in words is "twenty-one trillion, one hundred fifty billion, two hundred four million, forty-one thousand, one hundred twenty-one".