210021012002100 has 144 divisors (see below), whose sum is σ = 654421976812800. Its totient is φ = 51696054412800.

The previous prime is 210021012002041. The next prime is 210021012002171. The reversal of 210021012002100 is 1200210120012.

210021012002100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144352270 + ... + 145799930.

It is an arithmetic number, because the mean of its divisors is an integer number (4544597061200).

Almost surely, 2^{210021012002100} is an apocalyptic number.

210021012002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021012002100 is an abundant number, since it is smaller than the sum of its proper divisors (444400964810700).

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

210021012002100 is a wasteful number, since it uses less digits than its factorization.

210021012002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484890 (or 1484883 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210021012002100 its reverse (1200210120012), we get a palindrome (211221222122112).

The spelling of 210021012002100 in words is "two hundred ten trillion, twenty-one billion, twelve million, two thousand, one hundred".