212021110212102 has 24 divisors (see below), whose sum is σ = 459382638593736. Its totient is φ = 70673154716736.

The previous prime is 212021110212097. The next prime is 212021110212127. The reversal of 212021110212102 is 201212011120212.

212021110212102 is a `hidden beast` number, since 212 + 0 + 211 + 10 + 21 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43337683 + ... + 47981214.

It is an arithmetic number, because the mean of its divisors is an integer number (19140943274739).

Almost surely, 2^{212021110212102} is an apocalyptic number.

212021110212102 is an abundant number, since it is smaller than the sum of its proper divisors (247361528381634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212021110212102 is a wasteful number, since it uses less digits than its factorization.

212021110212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91447892 (or 91447889 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212021110212102 its reverse (201212011120212), we get a palindrome (413233121332314).

The spelling of 212021110212102 in words is "two hundred twelve trillion, twenty-one billion, one hundred ten million, two hundred twelve thousand, one hundred two".