121221201202 has 16 divisors (see below), whose sum is σ = 184985783424. Its totient is φ = 59564764000.

The previous prime is 121221201193. The next prime is 121221201217. The reversal of 121221201202 is 202102122121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328299 + ... + 1416622.

It is an arithmetic number, because the mean of its divisors is an integer number (11561611464).

Almost surely, 2^121221201202 is an apocalyptic number.

121221201202 is a deficient number, since it is larger than the sum of its proper divisors (63764582222).

121221201202 is a wasteful number, since it uses less digits than its factorization.

121221201202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745305.

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

Adding to 121221201202 its reverse (202102122121), we get a palindrome (323323323323).

The spelling of 121221201202 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, two hundred two".