21212040114142 has 4 divisors (see below), whose sum is σ = 31818060171216. Its totient is φ = 10606020057070.

The previous prime is 21212040114137. The next prime is 21212040114149. The reversal of 21212040114142 is 24141104021212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212040114149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5303010028534 + ... + 5303010028537.

It is an arithmetic number, because the mean of its divisors is an integer number (7954515042804).

Almost surely, 2^{21212040114142} is an apocalyptic number.

21212040114142 is a deficient number, since it is larger than the sum of its proper divisors (10606020057074).

21212040114142 is a wasteful number, since it uses less digits than its factorization.

21212040114142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10606020057073.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 21212040114142 its reverse (24141104021212), we get a palindrome (45353144135354).

The spelling of 21212040114142 in words is "twenty-one trillion, two hundred twelve billion, forty million, one hundred fourteen thousand, one hundred forty-two".