21143323143202 has 8 divisors (see below), whose sum is σ = 34154598923676. Its totient is φ = 9758456835312.

The previous prime is 21143323143193. The next prime is 21143323143263. The reversal of 21143323143202 is 20234132334112.

It can be written as a sum of positive squares in 2 ways, for example, as 20025526550121 + 1117796593081 = 4474989^2 + 1057259^2 .

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

It is a super-2 number, since 2×21143323143202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406602368113 + ... + 406602368164.

Almost surely, 2^{21143323143202} is an apocalyptic number.

21143323143202 is a deficient number, since it is larger than the sum of its proper divisors (13011275780474).

21143323143202 is a wasteful number, since it uses less digits than its factorization.

21143323143202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813204736292.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 21143323143202 its reverse (20234132334112), we get a palindrome (41377455477314).

The spelling of 21143323143202 in words is "twenty-one trillion, one hundred forty-three billion, three hundred twenty-three million, one hundred forty-three thousand, two hundred two".