2221010101121 has 32 divisors (see below), whose sum is σ = 2586424843008. Its totient is φ = 1868034758400.

The previous prime is 2221010101081. The next prime is 2221010101171. The reversal of 2221010101121 is 1211010101222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221010101121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221010101096 and 2221010101105.

It is not an unprimeable number, because it can be changed into a prime (2221010101171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38743946 + ... + 38801228.

It is an arithmetic number, because the mean of its divisors is an integer number (80825776344).

Almost surely, 2^{2221010101121} is an apocalyptic number.

It is an amenable number.

2221010101121 is a deficient number, since it is larger than the sum of its proper divisors (365414741887).

2221010101121 is a wasteful number, since it uses less digits than its factorization.

2221010101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57881.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2221010101121 its reverse (1211010101222), we get a palindrome (3432020202343).

The spelling of 2221010101121 in words is "two trillion, two hundred twenty-one billion, ten million, one hundred one thousand, one hundred twenty-one".