212021210102 has 32 divisors (see below), whose sum is σ = 364091505120. Its totient is φ = 91787731200.

The previous prime is 212021210101. The next prime is 212021210129. The reversal of 212021210102 is 201012120212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021210101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2074823 + ... + 2174610.

It is an arithmetic number, because the mean of its divisors is an integer number (11377859535).

Almost surely, 2^212021210102 is an apocalyptic number.

212021210102 is a deficient number, since it is larger than the sum of its proper divisors (152070295018).

212021210102 is a wasteful number, since it uses less digits than its factorization.

212021210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4249568.

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

Adding to 212021210102 its reverse (201012120212), we get a palindrome (413033330314).

The spelling of 212021210102 in words is "two hundred twelve billion, twenty-one million, two hundred ten thousand, one hundred two".