21040312141234 has 8 divisors (see below), whose sum is σ = 31560488581680. Its totient is φ = 10520149280676.

The previous prime is 21040312141231. The next prime is 21040312141271. The reversal of 21040312141234 is 43214121304012.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21040312141231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585377 + ... + 6983179.

It is an arithmetic number, because the mean of its divisors is an integer number (3945061072710).

Almost surely, 2^{21040312141234} is an apocalyptic number.

21040312141234 is a deficient number, since it is larger than the sum of its proper divisors (10520176440446).

21040312141234 is a wasteful number, since it uses less digits than its factorization.

21040312141234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789944.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21040312141234 its reverse (43214121304012), we get a palindrome (64254433445246).

The spelling of 21040312141234 in words is "twenty-one trillion, forty billion, three hundred twelve million, one hundred forty-one thousand, two hundred thirty-four".