121001211201 has 16 divisors (see below), whose sum is σ = 174391237440. Its totient is φ = 74185465920.

The previous prime is 121001211167. The next prime is 121001211241. The reversal of 121001211201 is 102112100121.

It is not a de Polignac number, because 121001211201 - 2⁶ = 121001211137 is a prime.

It is a super-2 number, since 2×121001211201² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121001211241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5756415 + ... + 5777396.

It is an arithmetic number, because the mean of its divisors is an integer number (10899452340).

Almost surely, 2^121001211201 is an apocalyptic number.

It is an amenable number.

121001211201 is a deficient number, since it is larger than the sum of its proper divisors (53390026239).

121001211201 is a wasteful number, since it uses less digits than its factorization.

121001211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11534096.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121001211201 its reverse (102112100121), we get a palindrome (223113311322).

The spelling of 121001211201 in words is "one hundred twenty-one billion, one million, two hundred eleven thousand, two hundred one".