201211121020202 has 64 divisors (see below), whose sum is σ = 344973236014080. Its totient is φ = 87445206503424.

The previous prime is 201211121020103. The next prime is 201211121020229. The reversal of 201211121020202 is 202020121112102.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1011860978 + ... + 1012059810.

It is an arithmetic number, because the mean of its divisors is an integer number (5390206812720).

Almost surely, 2^{201211121020202} is an apocalyptic number.

201211121020202 is a deficient number, since it is larger than the sum of its proper divisors (143762114993878).

201211121020202 is a wasteful number, since it uses less digits than its factorization.

201211121020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243527.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201211121020202 its reverse (202020121112102), we get a palindrome (403231242132304).

The spelling of 201211121020202 in words is "two hundred one trillion, two hundred eleven billion, one hundred twenty-one million, twenty thousand, two hundred two".