220001210121121 has 24 divisors (see below), whose sum is σ = 260044809234624. Its totient is φ = 184501514957760.

The previous prime is 220001210121097. The next prime is 220001210121223. The reversal of 220001210121121 is 121121012100022.

220001210121121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220001210121121 - 2¹¹ = 220001210119073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220001210121095 and 220001210121104.

It is not an unprimeable number, because it can be changed into a prime (220001210161121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33833946 + ... + 39808771.

It is an arithmetic number, because the mean of its divisors is an integer number (10835200384776).

Almost surely, 2^{220001210121121} is an apocalyptic number.

It is an amenable number.

220001210121121 is a deficient number, since it is larger than the sum of its proper divisors (40043599113503).

220001210121121 is a wasteful number, since it uses less digits than its factorization.

220001210121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73644361 (or 73644348 counting only the distinct ones).

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

Adding to 220001210121121 its reverse (121121012100022), we get a palindrome (341122222221143).

The spelling of 220001210121121 in words is "two hundred twenty trillion, one billion, two hundred ten million, one hundred twenty-one thousand, one hundred twenty-one".