1000021222111 has 2 divisors, whose sum is σ = 1000021222112. Its totient is φ = 1000021222110.

The previous prime is 1000021222103. The next prime is 1000021222117. The reversal of 1000021222111 is 1112221200001.

It is a strong prime.

It is an emirp because it is prime and its reverse (1112221200001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000021222111 - 2³ = 1000021222103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000021222091 and 1000021222100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000021222117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010611055 + 500010611056.

It is an arithmetic number, because the mean of its divisors is an integer number (500010611056).

Almost surely, 2^{1000021222111} is an apocalyptic number.

1000021222111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000021222111 is an equidigital number, since it uses as much as digits as its factorization.

1000021222111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1000021222111 its reverse (1112221200001), we get a palindrome (2112242422112).

The spelling of 1000021222111 in words is "one trillion, twenty-one million, two hundred twenty-two thousand, one hundred eleven".