201212102122 has 16 divisors (see below), whose sum is σ = 319726916640. Its totient is φ = 94703916528.

The previous prime is 201212102053. The next prime is 201212102173. The reversal of 201212102122 is 221201212102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201212102096 and 201212102105.

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, 16857268 + ... + 16869199.

It is an arithmetic number, because the mean of its divisors is an integer number (19982932290).

Almost surely, 2^201212102122 is an apocalyptic number.

201212102122 is a deficient number, since it is larger than the sum of its proper divisors (118514814518).

201212102122 is a wasteful number, since it uses less digits than its factorization.

201212102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33726645.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201212102122 its reverse (221201212102), we get a palindrome (422413314224).

The spelling of 201212102122 in words is "two hundred one billion, two hundred twelve million, one hundred two thousand, one hundred twenty-two".