211221210112102 has 8 divisors (see below), whose sum is σ = 316849213049112. Its totient is φ = 105604805762400.

The previous prime is 211221210112091. The next prime is 211221210112117. The reversal of 211221210112102 is 201211012122112.

It is a happy number.

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

It is a super-2 number, since 2×211221210112102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211221210112102.

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, 2899601299 + ... + 2899674142.

It is an arithmetic number, because the mean of its divisors is an integer number (39606151631139).

Almost surely, 2^{211221210112102} is an apocalyptic number.

211221210112102 is a deficient number, since it is larger than the sum of its proper divisors (105628002937010).

211221210112102 is a wasteful number, since it uses less digits than its factorization.

211221210112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799293654.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211221210112102 its reverse (201211012122112), we get a palindrome (412432222234214).

The spelling of 211221210112102 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred ten million, one hundred twelve thousand, one hundred two".