2111022120121 has 8 divisors (see below), whose sum is σ = 2121568869384. Its totient is φ = 2100499589760.

The previous prime is 2111022120037. The next prime is 2111022120127. The reversal of 2111022120121 is 1210212201112.

It can be written as a sum of positive squares in 4 ways, for example, as 195112141225 + 1915909978896 = 441715^2 + 1384164^2 .

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 2111022120121 - 2¹⁷ = 2111021989049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111022120095 and 2111022120104.

It is not an unprimeable number, because it can be changed into a prime (2111022120127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5879950 + ... + 6228631.

It is an arithmetic number, because the mean of its divisors is an integer number (265196108673).

Almost surely, 2^{2111022120121} is an apocalyptic number.

It is an amenable number.

2111022120121 is a deficient number, since it is larger than the sum of its proper divisors (10546749263).

2111022120121 is a wasteful number, since it uses less digits than its factorization.

2111022120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12109451.

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

Adding to 2111022120121 its reverse (1210212201112), we get a palindrome (3321234321233).

The spelling of 2111022120121 in words is "two trillion, one hundred eleven billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".