21143342414252 has 6 divisors (see below), whose sum is σ = 37000849224948. Its totient is φ = 10571671207124.

The previous prime is 21143342414251. The next prime is 21143342414267. The reversal of 21143342414252 is 25241424334112.

It is not an unprimeable number, because it can be changed into a prime (21143342414251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2642917801778 + ... + 2642917801785.

It is an arithmetic number, because the mean of its divisors is an integer number (6166808204158).

Almost surely, 2^{21143342414252} is an apocalyptic number.

It is an amenable number.

21143342414252 is a deficient number, since it is larger than the sum of its proper divisors (15857506810696).

21143342414252 is a wasteful number, since it uses less digits than its factorization.

21143342414252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285835603567 (or 5285835603565 counting only the distinct ones).

The product of its digits is 184320, while the sum is 38.

Adding to 21143342414252 its reverse (25241424334112), we get a palindrome (46384766748364).

The spelling of 21143342414252 in words is "twenty-one trillion, one hundred forty-three billion, three hundred forty-two million, four hundred fourteen thousand, two hundred fifty-two".