10011212030021 has 2 divisors, whose sum is σ = 10011212030022. Its totient is φ = 10011212030020.

The previous prime is 10011212030009. The next prime is 10011212030051. The reversal of 10011212030021 is 12003021211001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9815131333921 + 196080696100 = 3132911^2 + 442810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011212030021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10011212029978 and 10011212030005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10011212030051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005606015010 + 5005606015011.

It is an arithmetic number, because the mean of its divisors is an integer number (5005606015011).

Almost surely, 2^{10011212030021} is an apocalyptic number.

It is an amenable number.

10011212030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10011212030021 is an equidigital number, since it uses as much as digits as its factorization.

10011212030021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10011212030021 its reverse (12003021211001), we get a palindrome (22014233241022).

The spelling of 10011212030021 in words is "ten trillion, eleven billion, two hundred twelve million, thirty thousand, twenty-one".