121210220222021 has 8 divisors (see below), whose sum is σ = 138567930843264. Its totient is φ = 103863000819600.

The previous prime is 121210220222011. The next prime is 121210220222057. The reversal of 121210220222021 is 120222022012121.

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 121210220222021 - 2³⁴ = 121193040352837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210220221984 and 121210220222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210220222011) 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, 2622779945 + ... + 2622826158.

It is an arithmetic number, because the mean of its divisors is an integer number (17320991355408).

Almost surely, 2^{121210220222021} is an apocalyptic number.

It is an amenable number.

121210220222021 is a deficient number, since it is larger than the sum of its proper divisors (17357710621243).

121210220222021 is an equidigital number, since it uses as much as digits as its factorization.

121210220222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5245609411.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121210220222021 its reverse (120222022012121), we get a palindrome (241432242234142).

The spelling of 121210220222021 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred twenty million, two hundred twenty-two thousand, twenty-one".