210120200120 has 32 divisors (see below), whose sum is σ = 472783893120. Its totient is φ = 84045690240.

The previous prime is 210120200117. The next prime is 210120200131. The reversal of 210120200120 is 21002021012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2220494 + ... + 2313186.

It is an arithmetic number, because the mean of its divisors is an integer number (14774496660).

Almost surely, 2^210120200120 is an apocalyptic number.

210120200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210120200120 is an abundant number, since it is smaller than the sum of its proper divisors (262663693000).

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

210120200120 is a wasteful number, since it uses less digits than its factorization.

210120200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149375 (or 149371 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 210120200120 its reverse (21002021012), we get a palindrome (231122221132).

The spelling of 210120200120 in words is "two hundred ten billion, one hundred twenty million, two hundred thousand, one hundred twenty".