2120221103031 has 6 divisors (see below), whose sum is σ = 3062541593280. Its totient is φ = 1413480735348.

The previous prime is 2120221103029. The next prime is 2120221103057. The reversal of 2120221103031 is 1303011220212.

It is not a de Polignac number, because 2120221103031 - 2¹ = 2120221103029 is a prime.

It is a super-2 number, since 2×2120221103031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120221102995 and 2120221103013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120221103831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117790061271 + ... + 117790061288.

It is an arithmetic number, because the mean of its divisors is an integer number (510423598880).

Almost surely, 2^{2120221103031} is an apocalyptic number.

2120221103031 is a deficient number, since it is larger than the sum of its proper divisors (942320490249).

2120221103031 is a wasteful number, since it uses less digits than its factorization.

2120221103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235580122565 (or 235580122562 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2120221103031 its reverse (1303011220212), we get a palindrome (3423232323243).

The spelling of 2120221103031 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred three thousand, thirty-one".