121122010111121 has 4 divisors (see below), whose sum is σ = 121123089386292. Its totient is φ = 121120930835952.

The previous prime is 121122010111103. The next prime is 121122010111127. The reversal of 121122010111121 is 121111010221121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84148313751121 + 36973696360000 = 9173239^2 + 6080600^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122010111121 - 2²² = 121122005916817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121122010111121.

It is not an unprimeable number, because it can be changed into a prime (121122010111127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539469230 + ... + 539693703.

It is an arithmetic number, because the mean of its divisors is an integer number (30280772346573).

Almost surely, 2^{121122010111121} is an apocalyptic number.

It is an amenable number.

121122010111121 is a deficient number, since it is larger than the sum of its proper divisors (1079275171).

121122010111121 is a wasteful number, since it uses less digits than its factorization.

121122010111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079275170.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121122010111121 its reverse (121111010221121), we get a palindrome (242233020332242).

The spelling of 121122010111121 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, ten million, one hundred eleven thousand, one hundred twenty-one".