20210111222331 has 4 divisors (see below), whose sum is σ = 26946814963112. Its totient is φ = 13473407481552.

The previous prime is 20210111222309. The next prime is 20210111222387. The reversal of 20210111222331 is 13322211101202.

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

It is not a de Polignac number, because 20210111222331 - 2⁶ = 20210111222267 is a prime.

It is a super-2 number, since 2×20210111222331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210111222298 and 20210111222307.

It is not an unprimeable number, because it can be changed into a prime (20210111222131) 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, 3368351870386 + ... + 3368351870391.

It is an arithmetic number, because the mean of its divisors is an integer number (6736703740778).

Almost surely, 2^{20210111222331} is an apocalyptic number.

20210111222331 is a deficient number, since it is larger than the sum of its proper divisors (6736703740781).

20210111222331 is an equidigital number, since it uses as much as digits as its factorization.

20210111222331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736703740780.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20210111222331 its reverse (13322211101202), we get a palindrome (33532322323533).

The spelling of 20210111222331 in words is "twenty trillion, two hundred ten billion, one hundred eleven million, two hundred twenty-two thousand, three hundred thirty-one".