21210196002142 has 16 divisors (see below), whose sum is σ = 36820593423360. Its totient is φ = 8975019646008.

The previous prime is 21210196002133. The next prime is 21210196002161. The reversal of 21210196002142 is 24120069101212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9588695098 + ... + 9588697309.

It is an arithmetic number, because the mean of its divisors is an integer number (2301287088960).

Almost surely, 2^{21210196002142} is an apocalyptic number.

21210196002142 is a deficient number, since it is larger than the sum of its proper divisors (15610397421218).

21210196002142 is a wasteful number, since it uses less digits than its factorization.

21210196002142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19177392495.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 21210196002142 in words is "twenty-one trillion, two hundred ten billion, one hundred ninety-six million, two thousand, one hundred forty-two".