2031010122221 has 4 divisors (see below), whose sum is σ = 2031022675872. Its totient is φ = 2030997568572.

The previous prime is 2031010122151. The next prime is 2031010122313. The reversal of 2031010122221 is 1222210101302.

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 a de Polignac number, because none of the positive numbers 2^k-2031010122221 is a prime.

It is a super-2 number, since 2×2031010122221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031010122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031010122721) 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, 6030935 + ... + 6358788.

It is an arithmetic number, because the mean of its divisors is an integer number (507755668968).

Almost surely, 2^{2031010122221} is an apocalyptic number.

It is an amenable number.

2031010122221 is a deficient number, since it is larger than the sum of its proper divisors (12553651).

2031010122221 is a wasteful number, since it uses less digits than its factorization.

2031010122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12553650.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2031010122221 its reverse (1222210101302), we get a palindrome (3253220223523).

The spelling of 2031010122221 in words is "two trillion, thirty-one billion, ten million, one hundred twenty-two thousand, two hundred twenty-one".