201221121202 has 16 divisors (see below), whose sum is σ = 307536717600. Its totient is φ = 98715429280.

The previous prime is 201221121191. The next prime is 201221121221. The reversal of 201221121202 is 202121122102.

It is a happy 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, 1575052 + ... + 1698007.

It is an arithmetic number, because the mean of its divisors is an integer number (19221044850).

Almost surely, 2^201221121202 is an apocalyptic number.

201221121202 is a deficient number, since it is larger than the sum of its proper divisors (106315596398).

201221121202 is a wasteful number, since it uses less digits than its factorization.

201221121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273641.

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

Adding to 201221121202 its reverse (202121122102), we get a palindrome (403342243304).

The spelling of 201221121202 in words is "two hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred two".