210020030103221 has 4 divisors (see below), whose sum is σ = 226175417034252. Its totient is φ = 193864643172192.

The previous prime is 210020030103199. The next prime is 210020030103251. The reversal of 210020030103221 is 122301030020012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121698096002596 + 88321934100625 = 11031686^2 + 9397975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210020030103221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210020030103221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210020030103251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8077693465496 + ... + 8077693465521.

It is an arithmetic number, because the mean of its divisors is an integer number (56543854258563).

Almost surely, 2^{210020030103221} is an apocalyptic number.

It is an amenable number.

210020030103221 is a deficient number, since it is larger than the sum of its proper divisors (16155386931031).

210020030103221 is a wasteful number, since it uses less digits than its factorization.

210020030103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16155386931030.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 210020030103221 its reverse (122301030020012), we get a palindrome (332321060123233).

The spelling of 210020030103221 in words is "two hundred ten trillion, twenty billion, thirty million, one hundred three thousand, two hundred twenty-one".