122120121212121 has 8 divisors (see below), whose sum is σ = 162897715026144. Its totient is φ = 81377970769760.

The previous prime is 122120121212093. The next prime is 122120121212153. The reversal of 122120121212121 is 121212121021221.

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 122120121212121 - 2³¹ = 122117973728473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122120121212021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8860834875 + ... + 8860848656.

It is an arithmetic number, because the mean of its divisors is an integer number (20362214378268).

Almost surely, 2^{122120121212121} is an apocalyptic number.

It is an amenable number.

122120121212121 is a deficient number, since it is larger than the sum of its proper divisors (40777593814023).

122120121212121 is a wasteful number, since it uses less digits than its factorization.

122120121212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17721685831.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122120121212121 its reverse (121212121021221), we get a palindrome (243332242233342).

The spelling of 122120121212121 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-one".