21213101122 has 8 divisors (see below), whose sum is σ = 31962341376. Its totient is φ = 10558987332.

The previous prime is 21213101101. The next prime is 21213101131. The reversal of 21213101122 is 22110131212.

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 = 21213101096 and 21213101105.

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, 23781058 + ... + 23781949.

It is an arithmetic number, because the mean of its divisors is an integer number (3995292672).

Almost surely, 2^21213101122 is an apocalyptic number.

21213101122 is a deficient number, since it is larger than the sum of its proper divisors (10749240254).

21213101122 is a wasteful number, since it uses less digits than its factorization.

21213101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47563232.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21213101122 its reverse (22110131212), we get a palindrome (43323232334).

The spelling of 21213101122 in words is "twenty-one billion, two hundred thirteen million, one hundred one thousand, one hundred twenty-two".