220201211122121 has 8 divisors (see below), whose sum is σ = 225572760206304. Its totient is φ = 214829699554080.

The previous prime is 220201211122093. The next prime is 220201211122153. The reversal of 220201211122121 is 121221112102022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220201211122121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220201211122093 and 220201211122102.

It is not an unprimeable number, because it can be changed into a prime (220201211122181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2690306 + ... + 21157508.

It is an arithmetic number, because the mean of its divisors is an integer number (28196595025788).

Almost surely, 2^{220201211122121} is an apocalyptic number.

It is an amenable number.

220201211122121 is a deficient number, since it is larger than the sum of its proper divisors (5371549084183).

220201211122121 is a wasteful number, since it uses less digits than its factorization.

220201211122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18758071.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220201211122121 its reverse (121221112102022), we get a palindrome (341422323224143).

The spelling of 220201211122121 in words is "two hundred twenty trillion, two hundred one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-one".