1023121001011 has 2 divisors, whose sum is σ = 1023121001012. Its totient is φ = 1023121001010.

The previous prime is 1023121000997. The next prime is 1023121001027. The reversal of 1023121001011 is 1101001213201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023121001011 - 2¹³ = 1023120992819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023121000982 and 1023121001000.

It is not a weakly prime, because it can be changed into another prime (1023121001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511560500505 + 511560500506.

It is an arithmetic number, because the mean of its divisors is an integer number (511560500506).

Almost surely, 2^{1023121001011} is an apocalyptic number.

1023121001011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023121001011 is an equidigital number, since it uses as much as digits as its factorization.

1023121001011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1023121001011 its reverse (1101001213201), we get a palindrome (2124122214212).

The spelling of 1023121001011 in words is "one trillion, twenty-three billion, one hundred twenty-one million, one thousand, eleven".