2310221031221 has 2 divisors, whose sum is σ = 2310221031222. Its totient is φ = 2310221031220.

The previous prime is 2310221031169. The next prime is 2310221031299. The reversal of 2310221031221 is 1221301220132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1720989778225 + 589231252996 = 1311865^2 + 767614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2310221031221 - 2¹⁰ = 2310221030197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2310221031193 and 2310221031202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2310221031121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155110515610 + 1155110515611.

It is an arithmetic number, because the mean of its divisors is an integer number (1155110515611).

Almost surely, 2^{2310221031221} is an apocalyptic number.

It is an amenable number.

2310221031221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2310221031221 is an equidigital number, since it uses as much as digits as its factorization.

2310221031221 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 20.

Adding to 2310221031221 its reverse (1221301220132), we get a palindrome (3531522251353).

The spelling of 2310221031221 in words is "two trillion, three hundred ten billion, two hundred twenty-one million, thirty-one thousand, two hundred twenty-one".