220121101001201 has 4 divisors (see below), whose sum is σ = 220261216280304. Its totient is φ = 219980985722100.

The previous prime is 220121101001189. The next prime is 220121101001209. The reversal of 220121101001201 is 102100101121022.

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 220121101001201 - 2³⁸ = 219846223094257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220121101001209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70057637195 + ... + 70057640336.

It is an arithmetic number, because the mean of its divisors is an integer number (55065304070076).

Almost surely, 2^{220121101001201} is an apocalyptic number.

It is an amenable number.

220121101001201 is a deficient number, since it is larger than the sum of its proper divisors (140115279103).

220121101001201 is a wasteful number, since it uses less digits than its factorization.

220121101001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140115279102.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 220121101001201 its reverse (102100101121022), we get a palindrome (322221202122223).

The spelling of 220121101001201 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred one million, one thousand, two hundred one".