212223220123131 has 48 divisors (see below), whose sum is σ = 355151927629824. Its totient is φ = 119603767439232.

The previous prime is 212223220123127. The next prime is 212223220123157. The reversal of 212223220123131 is 131321022322212.

212223220123131 is a `hidden beast` number, since 2 + 1 + 2 + 22 + 322 + 0 + 1 + 2 + 313 + 1 = 666.

It is not a de Polignac number, because 212223220123131 - 2² = 212223220123127 is a prime.

It is a super-2 number, since 2×212223220123131² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212223220123095 and 212223220123104.

It is not an unprimeable number, because it can be changed into a prime (212223220123121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101834280 + ... + 103897386.

It is an arithmetic number, because the mean of its divisors is an integer number (7398998492288).

Almost surely, 2^{212223220123131} is an apocalyptic number.

212223220123131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212223220123131 is a deficient number, since it is larger than the sum of its proper divisors (142928707506693).

212223220123131 is a wasteful number, since it uses less digits than its factorization.

212223220123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085560 (or 2085557 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 212223220123131 its reverse (131321022322212), we get a palindrome (343544242445343).

The spelling of 212223220123131 in words is "two hundred twelve trillion, two hundred twenty-three billion, two hundred twenty million, one hundred twenty-three thousand, one hundred thirty-one".