121102202021201 has 4 divisors (see below), whose sum is σ = 127476002127600. Its totient is φ = 114728401914804.

The previous prime is 121102202021197. The next prime is 121102202021221. The reversal of 121102202021201 is 102120202201121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121102202021201 - 2² = 121102202021197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121102202021201.

It is not an unprimeable number, because it can be changed into a prime (121102202021221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3186900053171 + ... + 3186900053208.

It is an arithmetic number, because the mean of its divisors is an integer number (31869000531900).

Almost surely, 2^{121102202021201} is an apocalyptic number.

It is an amenable number.

121102202021201 is a deficient number, since it is larger than the sum of its proper divisors (6373800106399).

121102202021201 is an equidigital number, since it uses as much as digits as its factorization.

121102202021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373800106398.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121102202021201 its reverse (102120202201121), we get a palindrome (223222404222322).

The spelling of 121102202021201 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred two million, twenty-one thousand, two hundred one".