2002210331221 has 2 divisors, whose sum is σ = 2002210331222. Its totient is φ = 2002210331220.

The previous prime is 2002210331131. The next prime is 2002210331249. The reversal of 2002210331221 is 1221330122002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1741410140625 + 260800190596 = 1319625^2 + 510686^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002210331221 - 2²¹ = 2002208234069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002210371221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001105165610 + 1001105165611.

It is an arithmetic number, because the mean of its divisors is an integer number (1001105165611).

Almost surely, 2^{2002210331221} is an apocalyptic number.

It is an amenable number.

2002210331221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002210331221 is an equidigital number, since it uses as much as digits as its factorization.

2002210331221 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 2002210331221 its reverse (1221330122002), we get a palindrome (3223540453223).

The spelling of 2002210331221 in words is "two trillion, two billion, two hundred ten million, three hundred thirty-one thousand, two hundred twenty-one".