21142301342212 has 24 divisors (see below), whose sum is σ = 39236366838816. Its totient is φ = 9933844979328.

The previous prime is 21142301342189. The next prime is 21142301342219. The reversal of 21142301342212 is 21224310324112.

It is not an unprimeable number, because it can be changed into a prime (21142301342219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241726258 + ... + 241813705.

It is an arithmetic number, because the mean of its divisors is an integer number (1634848618284).

Almost surely, 2^{21142301342212} is an apocalyptic number.

It is an amenable number.

21142301342212 is a deficient number, since it is larger than the sum of its proper divisors (18094065496604).

21142301342212 is a wasteful number, since it uses less digits than its factorization.

21142301342212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483540627 (or 483540625 counting only the distinct ones).

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

Adding to 21142301342212 its reverse (21224310324112), we get a palindrome (42366611666324).

The spelling of 21142301342212 in words is "twenty-one trillion, one hundred forty-two billion, three hundred one million, three hundred forty-two thousand, two hundred twelve".