121102200201021 has 16 divisors (see below), whose sum is σ = 173939225746944. Its totient is φ = 74503479322944.

The previous prime is 121102200200911. The next prime is 121102200201053. The reversal of 121102200201021 is 120102002201121.

It is not a de Polignac number, because 121102200201021 - 2²² = 121102196006717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102200201421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436350541 + ... + 436627986.

It is an arithmetic number, because the mean of its divisors is an integer number (10871201609184).

Almost surely, 2^{121102200201021} is an apocalyptic number.

It is an amenable number.

121102200201021 is a deficient number, since it is larger than the sum of its proper divisors (52837025545923).

121102200201021 is a wasteful number, since it uses less digits than its factorization.

121102200201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872982100.

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

Adding to 121102200201021 its reverse (120102002201121), we get a palindrome (241204202402142).

The spelling of 121102200201021 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred million, two hundred one thousand, twenty-one".