220111200002121 has 32 divisors (see below), whose sum is σ = 303551715704832. Its totient is φ = 141724692775680.

The previous prime is 220111200002053. The next prime is 220111200002137. The reversal of 220111200002121 is 121200002111022.

It is not a de Polignac number, because 220111200002121 - 2²⁹ = 220110663131209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220111200002121.

It is not an unprimeable number, because it can be changed into a prime (220111200072121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245797441 + ... + 246691313.

It is an arithmetic number, because the mean of its divisors is an integer number (9485991115776).

Almost surely, 2^{220111200002121} is an apocalyptic number.

It is an amenable number.

220111200002121 is a deficient number, since it is larger than the sum of its proper divisors (83440515702711).

220111200002121 is a wasteful number, since it uses less digits than its factorization.

220111200002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899173.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220111200002121 its reverse (121200002111022), we get a palindrome (341311202113143).

The spelling of 220111200002121 in words is "two hundred twenty trillion, one hundred eleven billion, two hundred million, two thousand, one hundred twenty-one".