21112001002010 has 8 divisors (see below), whose sum is σ = 38001601803636. Its totient is φ = 8444800400800.

The previous prime is 21112001002003. The next prime is 21112001002031. The reversal of 21112001002010 is 1020010021112.

It can be written as a sum of positive squares in 2 ways, for example, as 17886496353049 + 3225504648961 = 4229243^2 + 1795969^2 .

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 = 21112001001982 and 21112001002000.

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, 1055600050091 + ... + 1055600050110.

Almost surely, 2^{21112001002010} is an apocalyptic number.

21112001002010 is a deficient number, since it is larger than the sum of its proper divisors (16889600801626).

21112001002010 is a wasteful number, since it uses less digits than its factorization.

21112001002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111200100208.

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

Adding to 21112001002010 its reverse (1020010021112), we get a palindrome (22132011023122).

The spelling of 21112001002010 in words is "twenty-one trillion, one hundred twelve billion, one million, two thousand, ten".