201210222121012 has 24 divisors (see below), whose sum is σ = 385420337208872. Its totient is φ = 91343858716800.

The previous prime is 201210222120997. The next prime is 201210222121043. The reversal of 201210222121012 is 210121222012102.

It can be written as a sum of positive squares in 4 ways, for example, as 14422403763856 + 186787818357156 = 3797684^2 + 13667034^2 .

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, 31716614439 + ... + 31716620782.

Almost surely, 2^{201210222121012} is an apocalyptic number.

It is an amenable number.

201210222121012 is a deficient number, since it is larger than the sum of its proper divisors (184210115087860).

201210222121012 is a wasteful number, since it uses less digits than its factorization.

201210222121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63433235299 (or 63433235297 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201210222121012 its reverse (210121222012102), we get a palindrome (411331444133114).

The spelling of 201210222121012 in words is "two hundred one trillion, two hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, twelve".