21241211112142 has 32 divisors (see below), whose sum is σ = 36501061588992. Its totient is φ = 9081495589824.

The previous prime is 21241211112131. The next prime is 21241211112227. The reversal of 21241211112142 is 24121111214212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29477883 + ... + 30189865.

It is an arithmetic number, because the mean of its divisors is an integer number (1140658174656).

Almost surely, 2^{21241211112142} is an apocalyptic number.

21241211112142 is a deficient number, since it is larger than the sum of its proper divisors (15259850476850).

21241211112142 is a wasteful number, since it uses less digits than its factorization.

21241211112142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717112.

The product of its digits is 512, while the sum is 25.

Adding to 21241211112142 its reverse (24121111214212), we get a palindrome (45362322326354).

The spelling of 21241211112142 in words is "twenty-one trillion, two hundred forty-one billion, two hundred eleven million, one hundred twelve thousand, one hundred forty-two".