121122202011121 has 4 divisors (see below), whose sum is σ = 121133958034432. Its totient is φ = 121110445987812.

The previous prime is 121122202011077. The next prime is 121122202011131. The reversal of 121122202011121 is 121110202221121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121122202011121 - 2²³ = 121122193622513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122202011131) 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, 5877996201 + ... + 5878016806.

It is an arithmetic number, because the mean of its divisors is an integer number (30283489508608).

Almost surely, 2^{121122202011121} is an apocalyptic number.

It is an amenable number.

121122202011121 is a deficient number, since it is larger than the sum of its proper divisors (11756023311).

121122202011121 is a wasteful number, since it uses less digits than its factorization.

121122202011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11756023310.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121122202011121 its reverse (121110202221121), we get a palindrome (242232404232242).

The spelling of 121122202011121 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred two million, eleven thousand, one hundred twenty-one".