101212202201021 has 4 divisors (see below), whose sum is σ = 101212235731452. Its totient is φ = 101212168670592.

The previous prime is 101212202200997. The next prime is 101212202201027. The reversal of 101212202201021 is 120102202212101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91152273916900 + 10059928284121 = 9547370^2 + 3171739^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212202201021 - 2³⁸ = 100937324294077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212202201027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11734190 + ... + 18442223.

It is an arithmetic number, because the mean of its divisors is an integer number (25303058932863).

Almost surely, 2^{101212202201021} is an apocalyptic number.

It is an amenable number.

101212202201021 is a deficient number, since it is larger than the sum of its proper divisors (33530431).

101212202201021 is an equidigital number, since it uses as much as digits as its factorization.

101212202201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33530430.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101212202201021 its reverse (120102202212101), we get a palindrome (221314404413122).

The spelling of 101212202201021 in words is "one hundred one trillion, two hundred twelve billion, two hundred two million, two hundred one thousand, twenty-one".