220111002102121 has 16 divisors (see below), whose sum is σ = 243682180922880. Its totient is φ = 197523354199680.

The previous prime is 220111002102107. The next prime is 220111002102149. The reversal of 220111002102121 is 121201200111022.

It is a cyclic number.

It is not a de Polignac number, because 220111002102121 - 2¹⁹ = 220111001577833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220111002102095 and 220111002102104.

It is not an unprimeable number, because it can be changed into a prime (220111002102161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729471481 + ... + 729773158.

It is an arithmetic number, because the mean of its divisors is an integer number (15230136307680).

Almost surely, 2^{220111002102121} is an apocalyptic number.

It is an amenable number.

220111002102121 is a deficient number, since it is larger than the sum of its proper divisors (23571178820759).

220111002102121 is a wasteful number, since it uses less digits than its factorization.

220111002102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459244976.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220111002102121 its reverse (121201200111022), we get a palindrome (341312202213143).

The spelling of 220111002102121 in words is "two hundred twenty trillion, one hundred eleven billion, two million, one hundred two thousand, one hundred twenty-one".