1012110011021 has 2 divisors, whose sum is σ = 1012110011022. Its totient is φ = 1012110011020.

The previous prime is 1012110010997. The next prime is 1012110011057. The reversal of 1012110011021 is 1201100112101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 948296178025 + 63813832996 = 973805^2 + 252614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012110011021 - 2³⁰ = 1011036269197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012110010993 and 1012110011011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012110011071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506055005510 + 506055005511.

It is an arithmetic number, because the mean of its divisors is an integer number (506055005511).

Almost surely, 2^{1012110011021} is an apocalyptic number.

It is an amenable number.

1012110011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012110011021 is an equidigital number, since it uses as much as digits as its factorization.

1012110011021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1012110011021 its reverse (1201100112101), we get a palindrome (2213210123122).

The spelling of 1012110011021 in words is "one trillion, twelve billion, one hundred ten million, eleven thousand, twenty-one".