1020210323221 has 2 divisors, whose sum is σ = 1020210323222. Its totient is φ = 1020210323220.

The previous prime is 1020210323191. The next prime is 1020210323233. The reversal of 1020210323221 is 1223230120201.

1020210323221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 530369910225 + 489840412996 = 728265^2 + 699886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020210323221 - 2¹³ = 1020210315029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020210303221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510105161610 + 510105161611.

It is an arithmetic number, because the mean of its divisors is an integer number (510105161611).

Almost surely, 2^{1020210323221} is an apocalyptic number.

It is an amenable number.

1020210323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020210323221 is an equidigital number, since it uses as much as digits as its factorization.

1020210323221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1020210323221 its reverse (1223230120201), we get a palindrome (2243440443422).

It can be divided in two parts, 1020210 and 323221, that added together give a palindrome (1343431).

The spelling of 1020210323221 in words is "one trillion, twenty billion, two hundred ten million, three hundred twenty-three thousand, two hundred twenty-one".