2201210131021 has 4 divisors (see below), whose sum is σ = 2401320142944. Its totient is φ = 2001100119100.

The previous prime is 2201210130983. The next prime is 2201210131027. The reversal of 2201210131021 is 1201310121022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2201210131021 - 2¹³ = 2201210122829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201210130986 and 2201210131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201210131027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100055005945 + ... + 100055005966.

It is an arithmetic number, because the mean of its divisors is an integer number (600330035736).

Almost surely, 2^{2201210131021} is an apocalyptic number.

It is an amenable number.

2201210131021 is a deficient number, since it is larger than the sum of its proper divisors (200110011923).

2201210131021 is a wasteful number, since it uses less digits than its factorization.

2201210131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200110011922.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2201210131021 its reverse (1201310121022), we get a palindrome (3402520252043).

Subtracting from 2201210131021 its reverse (1201310121022), we obtain a palindrome (999900009999).

The spelling of 2201210131021 in words is "two trillion, two hundred one billion, two hundred ten million, one hundred thirty-one thousand, twenty-one".