21202000112122 has 8 divisors (see below), whose sum is σ = 32035138855956. Its totient is φ = 10523620493472.

The previous prime is 21202000112101. The next prime is 21202000112131. The reversal of 21202000112122 is 22121100020212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19802063902401 + 1399936209721 = 4449951^2 + 1183189^2 .

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 = 21202000112096 and 21202000112105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38689780953 + ... + 38689781500.

Almost surely, 2^{21202000112122} is an apocalyptic number.

21202000112122 is a deficient number, since it is larger than the sum of its proper divisors (10833138743834).

21202000112122 is a wasteful number, since it uses less digits than its factorization.

21202000112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77379562592.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21202000112122 its reverse (22121100020212), we get a palindrome (43323100132334).

The spelling of 21202000112122 in words is "twenty-one trillion, two hundred two billion, one hundred twelve thousand, one hundred twenty-two".