211212110020102 has 4 divisors (see below), whose sum is σ = 316818165030156. Its totient is φ = 105606055010050.

The previous prime is 211212110020073. The next prime is 211212110020157. The reversal of 211212110020102 is 201020011212112.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×211212110020102² (a number of 29 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 52803027505024 + ... + 52803027505027.

It is an arithmetic number, because the mean of its divisors is an integer number (79204541257539).

Almost surely, 2^{211212110020102} is an apocalyptic number.

211212110020102 is a deficient number, since it is larger than the sum of its proper divisors (105606055010054).

211212110020102 is a wasteful number, since it uses less digits than its factorization.

211212110020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105606055010053.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211212110020102 its reverse (201020011212112), we get a palindrome (412232121232214).

The spelling of 211212110020102 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred ten million, twenty thousand, one hundred two".