121201122220201 has 4 divisors (see below), whose sum is σ = 124019752969552. Its totient is φ = 118382491470852.

The previous prime is 121201122220183. The next prime is 121201122220231. The reversal of 121201122220201 is 102022221102121.

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 a de Polignac number, because none of the positive numbers 2^k-121201122220201 is a prime.

It is a super-2 number, since 2×121201122220201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201122220231) 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, 1409315374611 + ... + 1409315374696.

It is an arithmetic number, because the mean of its divisors is an integer number (31004938242388).

Almost surely, 2^{121201122220201} is an apocalyptic number.

It is an amenable number.

121201122220201 is a deficient number, since it is larger than the sum of its proper divisors (2818630749351).

121201122220201 is an equidigital number, since it uses as much as digits as its factorization.

121201122220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818630749350.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121201122220201 its reverse (102022221102121), we get a palindrome (223223343322322).

The spelling of 121201122220201 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred one".