21103011122 has 8 divisors (see below), whose sum is σ = 32173443372. Its totient is φ = 10378530000.

The previous prime is 21103011089. The next prime is 21103011179. The reversal of 21103011122 is 22111030112.

It can be written as a sum of positive squares in 2 ways, for example, as 21100758121 + 2253001 = 145261^2 + 1501^2 .

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 = 21103011097 and 21103011106.

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, 86487629 + ... + 86487872.

Almost surely, 2^21103011122 is an apocalyptic number.

21103011122 is a deficient number, since it is larger than the sum of its proper divisors (11070432250).

21103011122 is a wasteful number, since it uses less digits than its factorization.

21103011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172975564.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21103011122 its reverse (22111030112), we get a palindrome (43214041234).

The spelling of 21103011122 in words is "twenty-one billion, one hundred three million, eleven thousand, one hundred twenty-two".