121202201211021 has 60 divisors (see below), whose sum is σ = 212659971075552. Its totient is φ = 68585988803472.

The previous prime is 121202201211001. The next prime is 121202201211043. The reversal of 121202201211021 is 120112102202121.

121202201211021 is a `hidden beast` number, since 1 + 212 + 0 + 220 + 1 + 211 + 0 + 21 = 666.

It is not a de Polignac number, because 121202201211021 - 2¹¹ = 121202201208973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121202201210985 and 121202201211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202201211001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 147830095 + ... + 148647708.

Almost surely, 2^{121202201211021} is an apocalyptic number.

It is an amenable number.

121202201211021 is a deficient number, since it is larger than the sum of its proper divisors (91457769864531).

121202201211021 is a wasteful number, since it uses less digits than its factorization.

121202201211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296477932 (or 296477916 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121202201211021 its reverse (120112102202121), we get a palindrome (241314303413142).

The spelling of 121202201211021 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred one million, two hundred eleven thousand, twenty-one".