121221012201 has 32 divisors (see below), whose sum is σ = 170097776640. Its totient is φ = 76692256704.

The previous prime is 121221012197. The next prime is 121221012217. The reversal of 121221012201 is 102210122121.

It is not a de Polignac number, because 121221012201 - 2² = 121221012197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121221010201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3414126 + ... + 3449448.

It is an arithmetic number, because the mean of its divisors is an integer number (5315555520).

Almost surely, 2^121221012201 is an apocalyptic number.

It is an amenable number.

121221012201 is a deficient number, since it is larger than the sum of its proper divisors (48876764439).

121221012201 is a wasteful number, since it uses less digits than its factorization.

121221012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36125.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121221012201 its reverse (102210122121), we get a palindrome (223431134322).

The spelling of 121221012201 in words is "one hundred twenty-one billion, two hundred twenty-one million, twelve thousand, two hundred one".