212121020002102 has 4 divisors (see below), whose sum is σ = 318181530003156. Its totient is φ = 106060510001050.

The previous prime is 212121020002057. The next prime is 212121020002123. The reversal of 212121020002102 is 201200020121212.

It is a happy number.

212121020002102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×212121020002102³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53030255000524 + ... + 53030255000527.

It is an arithmetic number, because the mean of its divisors is an integer number (79545382500789).

Almost surely, 2^{212121020002102} is an apocalyptic number.

212121020002102 is a deficient number, since it is larger than the sum of its proper divisors (106060510001054).

212121020002102 is a wasteful number, since it uses less digits than its factorization.

212121020002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106060510001053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212121020002102 its reverse (201200020121212), we get a palindrome (413321040123314).

The spelling of 212121020002102 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty million, two thousand, one hundred two".