21202010001212 has 12 divisors (see below), whose sum is σ = 37626102256176. Its totient is φ = 10451695070880.

The previous prime is 21202010001169. The next prime is 21202010001223. The reversal of 21202010001212 is 21210001020212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37327482113 + ... + 37327482680.

It is an arithmetic number, because the mean of its divisors is an integer number (3135508521348).

Almost surely, 2^{21202010001212} is an apocalyptic number.

It is an amenable number.

21202010001212 is a deficient number, since it is larger than the sum of its proper divisors (16424092254964).

21202010001212 is a wasteful number, since it uses less digits than its factorization.

21202010001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74654964868 (or 74654964866 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21202010001212 its reverse (21210001020212), we get a palindrome (42412011021424).

The spelling of 21202010001212 in words is "twenty-one trillion, two hundred two billion, ten million, one thousand, two hundred twelve".