121002012201 has 16 divisors (see below), whose sum is σ = 184431873024. Its totient is φ = 69126061584.

The previous prime is 121002012199. The next prime is 121002012233. The reversal of 121002012201 is 102210200121.

It is not a de Polignac number, because 121002012201 - 2¹ = 121002012199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121002012101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664671 + ... + 826916.

It is an arithmetic number, because the mean of its divisors is an integer number (11526992064).

Almost surely, 2^121002012201 is an apocalyptic number.

It is an amenable number.

121002012201 is a deficient number, since it is larger than the sum of its proper divisors (63429860823).

121002012201 is a wasteful number, since it uses less digits than its factorization.

121002012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495460.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121002012201 its reverse (102210200121), we get a palindrome (223212212322).

It can be divided in two parts, 1210020 and 12201, that added together give a palindrome (1222221).

The spelling of 121002012201 in words is "one hundred twenty-one billion, two million, twelve thousand, two hundred one".