210120100211021 has 64 divisors (see below), whose sum is σ = 288269619187200. Its totient is φ = 150929123627520.

The previous prime is 210120100211017. The next prime is 210120100211027. The reversal of 210120100211021 is 120112001021012.

It is not a de Polignac number, because 210120100211021 - 2² = 210120100211017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210120100210987 and 210120100211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120100211027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33030761 + ... + 38875073.

It is an arithmetic number, because the mean of its divisors is an integer number (4504212799800).

Almost surely, 2^{210120100211021} is an apocalyptic number.

It is an amenable number.

210120100211021 is a deficient number, since it is larger than the sum of its proper divisors (78149518976179).

210120100211021 is a wasteful number, since it uses less digits than its factorization.

210120100211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5845091 (or 5845077 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210120100211021 its reverse (120112001021012), we get a palindrome (330232101232033).

The spelling of 210120100211021 in words is "two hundred ten trillion, one hundred twenty billion, one hundred million, two hundred eleven thousand, twenty-one".