20122232002121 has 8 divisors (see below), whose sum is σ = 20501968085640. Its totient is φ = 19742498560512.

The previous prime is 20122232002013. The next prime is 20122232002127. The reversal of 20122232002121 is 12120023222102.

It can be written as a sum of positive squares in 4 ways, for example, as 1276527127225 + 18845704874896 = 1129835^2 + 4341164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122232002121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122232002093 and 20122232002102.

It is not an unprimeable number, because it can be changed into a prime (20122232002127) 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, 21953411 + ... + 22851623.

It is an arithmetic number, because the mean of its divisors is an integer number (2562746010705).

Almost surely, 2^{20122232002121} is an apocalyptic number.

It is an amenable number.

20122232002121 is a deficient number, since it is larger than the sum of its proper divisors (379736083519).

20122232002121 is an equidigital number, since it uses as much as digits as its factorization.

20122232002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320955.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20122232002121 its reverse (12120023222102), we get a palindrome (32242255224223).

The spelling of 20122232002121 in words is "twenty trillion, one hundred twenty-two billion, two hundred thirty-two million, two thousand, one hundred twenty-one".