2002212110021 has 2 divisors, whose sum is σ = 2002212110022. Its totient is φ = 2002212110020.

The previous prime is 2002212110011. The next prime is 2002212110029. The reversal of 2002212110021 is 1200112122002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1554724696996 + 447487413025 = 1246886^2 + 668945^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002212110021 - 2⁶ = 2002212109957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002212109978 and 2002212110005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002212110029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001106055010 + 1001106055011.

It is an arithmetic number, because the mean of its divisors is an integer number (1001106055011).

Almost surely, 2^{2002212110021} is an apocalyptic number.

It is an amenable number.

2002212110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002212110021 is an equidigital number, since it uses as much as digits as its factorization.

2002212110021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2002212110021 its reverse (1200112122002), we get a palindrome (3202324232023).

The spelling of 2002212110021 in words is "two trillion, two billion, two hundred twelve million, one hundred ten thousand, twenty-one".