21112020332122 has 8 divisors (see below), whose sum is σ = 31668067156500. Its totient is φ = 10555997946624.

The previous prime is 21112020332119. The next prime is 21112020332129. The reversal of 21112020332122 is 22123302021112.

It can be written as a sum of positive squares in 2 ways, for example, as 19145796599281 + 1966223732841 = 4375591^2 + 1402221^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21112020332093 and 21112020332102.

It is not an unprimeable number, because it can be changed into a prime (21112020332129) 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, 3770997 + ... + 7512952.

Almost surely, 2^{21112020332122} is an apocalyptic number.

21112020332122 is a deficient number, since it is larger than the sum of its proper divisors (10556046824378).

21112020332122 is a wasteful number, since it uses less digits than its factorization.

21112020332122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12219440.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21112020332122 its reverse (22123302021112), we get a palindrome (43235322353234).

The spelling of 21112020332122 in words is "twenty-one trillion, one hundred twelve billion, twenty million, three hundred thirty-two thousand, one hundred twenty-two".