1020511401223 has 2 divisors, whose sum is σ = 1020511401224. Its totient is φ = 1020511401222.

The previous prime is 1020511401199. The next prime is 1020511401253. The reversal of 1020511401223 is 3221041150201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020511401223 is a prime.

It is a super-2 number, since 2×1020511401223² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020511401194 and 1020511401203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020511401253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510255700611 + 510255700612.

It is an arithmetic number, because the mean of its divisors is an integer number (510255700612).

Almost surely, 2^{1020511401223} is an apocalyptic number.

1020511401223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020511401223 is an equidigital number, since it uses as much as digits as its factorization.

1020511401223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 1020511401223 its reverse (3221041150201), we get a palindrome (4241552551424).

The spelling of 1020511401223 in words is "one trillion, twenty billion, five hundred eleven million, four hundred one thousand, two hundred twenty-three".