201213122 has 32 divisors (see below), whose sum is σ = 355238784. Its totient is φ = 84448000.

The previous prime is 201213121. The next prime is 201213137. The reversal of 201213122 is 221312102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201213097 and 201213106.

It is not an unprimeable number, because it can be changed into a prime (201213121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14747 + ... + 24897.

It is an arithmetic number, because the mean of its divisors is an integer number (11101212).

Almost surely, 2^201213122 is an apocalyptic number.

201213122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201213122 is a deficient number, since it is larger than the sum of its proper divisors (154025662).

201213122 is a wasteful number, since it uses less digits than its factorization.

201213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201213122 is about 14184.9611208491. The cubic root of 201213122 is about 585.9835617625.

Adding to 201213122 its reverse (221312102), we get a palindrome (422525224).

The spelling of 201213122 in words is "two hundred one million, two hundred thirteen thousand, one hundred twenty-two".