210200120021221 has 8 divisors (see below), whose sum is σ = 229328789284800. Its totient is φ = 191074711998240.

The previous prime is 210200120021201. The next prime is 210200120021249. The reversal of 210200120021221 is 122120021002012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210200120021221 - 2²⁵ = 210200086466789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210200120021195 and 210200120021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210200120021201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815175376 + ... + 815433193.

It is an arithmetic number, because the mean of its divisors is an integer number (28666098660600).

Almost surely, 2^{210200120021221} is an apocalyptic number.

It is an amenable number.

210200120021221 is a deficient number, since it is larger than the sum of its proper divisors (19128669263579).

210200120021221 is a wasteful number, since it uses less digits than its factorization.

210200120021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630620299.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210200120021221 its reverse (122120021002012), we get a palindrome (332320141023233).

The spelling of 210200120021221 in words is "two hundred ten trillion, two hundred billion, one hundred twenty million, twenty-one thousand, two hundred twenty-one".