21210220010102 has 8 divisors (see below), whose sum is σ = 31815825997512. Its totient is φ = 10604944677600.

The previous prime is 21210220010059. The next prime is 21210220010153. The reversal of 21210220010102 is 20101002201212.

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, 82503299 + ... + 82759982.

It is an arithmetic number, because the mean of its divisors is an integer number (3976978249689).

Almost surely, 2^{21210220010102} is an apocalyptic number.

21210220010102 is a deficient number, since it is larger than the sum of its proper divisors (10605605987410).

21210220010102 is a wasteful number, since it uses less digits than its factorization.

21210220010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165327454.

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

Adding to 21210220010102 its reverse (20101002201212), we get a palindrome (41311222211314).

The spelling of 21210220010102 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty million, ten thousand, one hundred two".