210120021021212 has 12 divisors (see below), whose sum is σ = 367900461470136. Its totient is φ = 105005603458320.

The previous prime is 210120021021199. The next prime is 210120021021269. The reversal of 210120021021212 is 212120120021012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13601754383 + ... + 13601769830.

It is an arithmetic number, because the mean of its divisors is an integer number (30658371789178).

Almost surely, 2^{210120021021212} is an apocalyptic number.

It is an amenable number.

210120021021212 is a deficient number, since it is larger than the sum of its proper divisors (157780440448924).

210120021021212 is a wasteful number, since it uses less digits than its factorization.

210120021021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27203526148 (or 27203526146 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210120021021212 its reverse (212120120021012), we get a palindrome (422240141042224).

The spelling of 210120021021212 in words is "two hundred ten trillion, one hundred twenty billion, twenty-one million, twenty-one thousand, two hundred twelve".