201231122222 has 16 divisors (see below), whose sum is σ = 326523361920. Its totient is φ = 92459416032.

The previous prime is 201231122207. The next prime is 201231122237. The reversal of 201231122222 is 222221132102.

It is an interprime number because it is at equal distance from previous prime (201231122207) and next prime (201231122237).

It is a junction number, because it is equal to n+sod(n) for n = 201231122194 and 201231122203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17347697 + ... + 17359292.

It is an arithmetic number, because the mean of its divisors is an integer number (20407710120).

Almost surely, 2^201231122222 is an apocalyptic number.

201231122222 is a deficient number, since it is larger than the sum of its proper divisors (125292239698).

201231122222 is a wasteful number, since it uses less digits than its factorization.

201231122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34707227.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201231122222 its reverse (222221132102), we get a palindrome (423452254324).

The spelling of 201231122222 in words is "two hundred one billion, two hundred thirty-one million, one hundred twenty-two thousand, two hundred twenty-two".