1022112223421 has 2 divisors, whose sum is σ = 1022112223422. Its totient is φ = 1022112223420.

The previous prime is 1022112223409. The next prime is 1022112223427. The reversal of 1022112223421 is 1243222112201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 932163216196 + 89949007225 = 965486^2 + 299915^2 .

It is an emirp because it is prime and its reverse (1243222112201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022112223421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022112223427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511056111710 + 511056111711.

It is an arithmetic number, because the mean of its divisors is an integer number (511056111711).

Almost surely, 2^{1022112223421} is an apocalyptic number.

It is an amenable number.

1022112223421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022112223421 is an equidigital number, since it uses as much as digits as its factorization.

1022112223421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1022112223421 its reverse (1243222112201), we get a palindrome (2265334335622).

The spelling of 1022112223421 in words is "one trillion, twenty-two billion, one hundred twelve million, two hundred twenty-three thousand, four hundred twenty-one".