21010010001122 has 8 divisors (see below), whose sum is σ = 31515089463900. Its totient is φ = 10504980179824.

The previous prime is 21010010001061. The next prime is 21010010001133. The reversal of 21010010001122 is 22110001001012.

It can be written as a sum of positive squares in 2 ways, for example, as 18525543665161 + 2484466335961 = 4304131^2 + 1576219^2 .

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

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, 11333597 + ... + 13056432.

Almost surely, 2^{21010010001122} is an apocalyptic number.

21010010001122 is a deficient number, since it is larger than the sum of its proper divisors (10505079462778).

21010010001122 is a wasteful number, since it uses less digits than its factorization.

21010010001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24820740.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21010010001122 its reverse (22110001001012), we get a palindrome (43120011002134).

The spelling of 21010010001122 in words is "twenty-one trillion, ten billion, ten million, one thousand, one hundred twenty-two".