2222010100021 has 2 divisors, whose sum is σ = 2222010100022. Its totient is φ = 2222010100020.

The previous prime is 2222010099997. The next prime is 2222010100069. The reversal of 2222010100021 is 1200010102222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2112342492100 + 109667607921 = 1453390^2 + 331161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222010100021 - 2⁹ = 2222010099509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222010099974 and 2222010100010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222010100081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111005050010 + 1111005050011.

It is an arithmetic number, because the mean of its divisors is an integer number (1111005050011).

Almost surely, 2^{2222010100021} is an apocalyptic number.

It is an amenable number.

2222010100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222010100021 is an equidigital number, since it uses as much as digits as its factorization.

2222010100021 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 13.

Adding to 2222010100021 its reverse (1200010102222), we get a palindrome (3422020202243).

The spelling of 2222010100021 in words is "two trillion, two hundred twenty-two billion, ten million, one hundred thousand, twenty-one".