1012101121021 has 2 divisors, whose sum is σ = 1012101121022. Its totient is φ = 1012101121020.

The previous prime is 1012101121013. The next prime is 1012101121033. The reversal of 1012101121021 is 1201211012101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 762486972025 + 249614148996 = 873205^2 + 499614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012101121021 - 2³ = 1012101121013 is a prime.

It is a super-3 number, since 3×1012101121021³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012101120992 and 1012101121010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012101128021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506050560510 + 506050560511.

It is an arithmetic number, because the mean of its divisors is an integer number (506050560511).

Almost surely, 2^{1012101121021} is an apocalyptic number.

It is an amenable number.

1012101121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012101121021 is an equidigital number, since it uses as much as digits as its factorization.

1012101121021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012101121021 its reverse (1201211012101), we get a palindrome (2213312133122).

The spelling of 1012101121021 in words is "one trillion, twelve billion, one hundred one million, one hundred twenty-one thousand, twenty-one".