1021220011223 has 2 divisors, whose sum is σ = 1021220011224. Its totient is φ = 1021220011222.

The previous prime is 1021220011193. The next prime is 1021220011283. The reversal of 1021220011223 is 3221100221201.

It is a weak prime.

It is an emirp because it is prime and its reverse (3221100221201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021220011223 is a prime.

It is a super-2 number, since 2×1021220011223² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021220011283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510610005611 + 510610005612.

It is an arithmetic number, because the mean of its divisors is an integer number (510610005612).

Almost surely, 2^{1021220011223} is an apocalyptic number.

1021220011223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021220011223 is an equidigital number, since it uses as much as digits as its factorization.

1021220011223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1021220011223 its reverse (3221100221201), we get a palindrome (4242320232424).

The spelling of 1021220011223 in words is "one trillion, twenty-one billion, two hundred twenty million, eleven thousand, two hundred twenty-three".