220001122121 has 8 divisors (see below), whose sum is σ = 247743199488. Its totient is φ = 193549374000.

The previous prime is 220001122087. The next prime is 220001122141. The reversal of 220001122121 is 121221100022.

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

It is a cyclic number.

It is not a de Polignac number, because 220001122121 - 2¹⁸ = 220000859977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220001122096 and 220001122105.

It is not an unprimeable number, because it can be changed into a prime (220001122141) 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, 322581950 + ... + 322582631.

It is an arithmetic number, because the mean of its divisors is an integer number (30967899936).

Almost surely, 2^220001122121 is an apocalyptic number.

It is an amenable number.

220001122121 is a deficient number, since it is larger than the sum of its proper divisors (27742077367).

220001122121 is a wasteful number, since it uses less digits than its factorization.

220001122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645164623.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220001122121 its reverse (121221100022), we get a palindrome (341222222143).

The spelling of 220001122121 in words is "two hundred twenty billion, one million, one hundred twenty-two thousand, one hundred twenty-one".