21221365126102 has 8 divisors (see below), whose sum is σ = 31833642461112. Its totient is φ = 10610150972400.

The previous prime is 21221365126099. The next prime is 21221365126187. The reversal of 21221365126102 is 20162156312212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 265745424 + ... + 265825267.

It is an arithmetic number, because the mean of its divisors is an integer number (3979205307639).

Almost surely, 2^{21221365126102} is an apocalyptic number.

21221365126102 is a deficient number, since it is larger than the sum of its proper divisors (10612277335010).

21221365126102 is a wasteful number, since it uses less digits than its factorization.

21221365126102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531590654.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 21221365126102 in words is "twenty-one trillion, two hundred twenty-one billion, three hundred sixty-five million, one hundred twenty-six thousand, one hundred two".