21010311122 has 8 divisors (see below), whose sum is σ = 31548960972. Its totient is φ = 10493990800.

The previous prime is 21010311121. The next prime is 21010311143. The reversal of 21010311122 is 22111301012.

It can be written as a sum of positive squares in 2 ways, for example, as 19501843201 + 1508467921 = 139649^2 + 38839^2 .

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 = 21010311097 and 21010311106.

It is not an unprimeable number, because it can be changed into a prime (21010311121) 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, 5580029 + ... + 5583792.

Almost surely, 2^21010311122 is an apocalyptic number.

21010311122 is a deficient number, since it is larger than the sum of its proper divisors (10538649850).

21010311122 is a wasteful number, since it uses less digits than its factorization.

21010311122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11164764.

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

Adding to 21010311122 its reverse (22111301012), we get a palindrome (43121612134).

The spelling of 21010311122 in words is "twenty-one billion, ten million, three hundred eleven thousand, one hundred twenty-two".