121022020201 has 4 divisors (see below), whose sum is σ = 121792861252. Its totient is φ = 120251179152.

The previous prime is 121022020199. The next prime is 121022020237. The reversal of 121022020201 is 102020220121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102020220121 = 2111 ⋅48327911.

It can be written as a sum of positive squares in 2 ways, for example, as 32782723600 + 88239296601 = 181060^2 + 297051^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022020201 - 2¹ = 121022020199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121022020291) 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, 385420290 + ... + 385420603.

It is an arithmetic number, because the mean of its divisors is an integer number (30448215313).

Almost surely, 2^121022020201 is an apocalyptic number.

It is an amenable number.

121022020201 is a deficient number, since it is larger than the sum of its proper divisors (770841051).

121022020201 is an equidigital number, since it uses as much as digits as its factorization.

121022020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770841050.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121022020201 its reverse (102020220121), we get a palindrome (223042240322).

The spelling of 121022020201 in words is "one hundred twenty-one billion, twenty-two million, twenty thousand, two hundred one".