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BaseRepresentation
bin1010111010100100000010…
…0101111110000001100111
31120111022020211002101221010
42232221000211332001213
53033112000403221411
641305141352353303
72346026322402234
oct256510045760147
946438224071833
1012001222320231
113907765146111
121419b010a5833
136909309ca5b1
142d6c1007c78b
1515c2a53b97a6
hexaea4097e067

12001222320231 has 4 divisors (see below), whose sum is σ = 16001629760312. Its totient is φ = 8000814880152.

The previous prime is 12001222320229. The next prime is 12001222320289. The reversal of 12001222320231 is 13202322210021.

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

It is not a de Polignac number, because 12001222320231 - 21 = 12001222320229 is a prime.

It is a super-2 number, since 2×120012223202312 (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 = 12001222320198 and 12001222320207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001222320211) 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, 2000203720036 + ... + 2000203720041.

It is an arithmetic number, because the mean of its divisors is an integer number (4000407440078).

Almost surely, 212001222320231 is an apocalyptic number.

12001222320231 is a deficient number, since it is larger than the sum of its proper divisors (4000407440081).

12001222320231 is an equidigital number, since it uses as much as digits as its factorization.

12001222320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000407440080.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12001222320231 its reverse (13202322210021), we get a palindrome (25203544530252).

The spelling of 12001222320231 in words is "twelve trillion, one billion, two hundred twenty-two million, three hundred twenty thousand, two hundred thirty-one".

Divisors: 1 3 4000407440077 12001222320231