100212110122021 has 2 divisors, whose sum is σ = 100212110122022. Its totient is φ = 100212110122020.

The previous prime is 100212110121947. The next prime is 100212110122027. The reversal of 100212110122021 is 120221011212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99747879112996 + 464231009025 = 9987386^2 + 681345^2 .

It is a cyclic number.

It is not a de Polignac number, because 100212110122021 - 2⁹ = 100212110121509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212110121986 and 100212110122004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100212110122027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106055061010 + 50106055061011.

It is an arithmetic number, because the mean of its divisors is an integer number (50106055061011).

Almost surely, 2^{100212110122021} is an apocalyptic number.

It is an amenable number.

100212110122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212110122021 is an equidigital number, since it uses as much as digits as its factorization.

100212110122021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100212110122021 its reverse (120221011212001), we get a palindrome (220433121334022).

The spelling of 100212110122021 in words is "one hundred trillion, two hundred twelve billion, one hundred ten million, one hundred twenty-two thousand, twenty-one".