101212020021001 has 4 divisors (see below), whose sum is σ = 101312329258900. Its totient is φ = 101111710783104.

The previous prime is 101212020020981. The next prime is 101212020021019. The reversal of 101212020021001 is 100120020212101.

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 22870402854601 + 78341617166400 = 4782301^2 + 8851080^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212020021001 - 2³⁷ = 101074581067529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212020021041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50154617436 + ... + 50154619453.

It is an arithmetic number, because the mean of its divisors is an integer number (25328082314725).

Almost surely, 2^{101212020021001} is an apocalyptic number.

It is an amenable number.

101212020021001 is a deficient number, since it is larger than the sum of its proper divisors (100309237899).

101212020021001 is a wasteful number, since it uses less digits than its factorization.

101212020021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100309237898.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101212020021001 its reverse (100120020212101), we get a palindrome (201332040233102).

The spelling of 101212020021001 in words is "one hundred one trillion, two hundred twelve billion, twenty million, twenty-one thousand, one".