201221201102 has 16 divisors (see below), whose sum is σ = 314968161312. Its totient is φ = 96232181760.

The previous prime is 201221201099. The next prime is 201221201107. The reversal of 201221201102 is 201102122102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221201107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213838 + ... + 1369614.

It is an arithmetic number, because the mean of its divisors is an integer number (19685510082).

Almost surely, 2^201221201102 is an apocalyptic number.

201221201102 is a deficient number, since it is larger than the sum of its proper divisors (113746960210).

201221201102 is a wasteful number, since it uses less digits than its factorization.

201221201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183883.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201221201102 its reverse (201102122102), we get a palindrome (402323323204).

The spelling of 201221201102 in words is "two hundred one billion, two hundred twenty-one million, two hundred one thousand, one hundred two".