21050143252254 has 24 divisors (see below), whose sum is σ = 45732917961120. Its totient is φ = 6997595302368.

The previous prime is 21050143252231. The next prime is 21050143252277. The reversal of 21050143252254 is 45225234105012.

21050143252254 is a `hidden beast` number, since 2 + 1 + 0 + 50 + 1 + 4 + 32 + 522 + 54 = 666.

It is an interprime number because it is at equal distance from previous prime (21050143252231) and next prime (21050143252277).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1593252799 + ... + 1593266010.

It is an arithmetic number, because the mean of its divisors is an integer number (1905538248380).

Almost surely, 2^{21050143252254} is an apocalyptic number.

21050143252254 is an abundant number, since it is smaller than the sum of its proper divisors (24682774708866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21050143252254 is a wasteful number, since it uses less digits than its factorization.

21050143252254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186519184 (or 3186519181 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 21050143252254 its reverse (45225234105012), we get a palindrome (66275377357266).

The spelling of 21050143252254 in words is "twenty-one trillion, fifty billion, one hundred forty-three million, two hundred fifty-two thousand, two hundred fifty-four".