21101002002122 has 8 divisors (see below), whose sum is σ = 36173146289376. Its totient is φ = 9043286572332.

The previous prime is 21101002002107. The next prime is 21101002002151. The reversal of 21101002002122 is 22120020010112.

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

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 1507214428723 = 21101002002122 / (2 + 1 + 1 + 0 + 1 + 0 + 0 + 2 + 0 + 0 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21101002002097 and 21101002002106.

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, 753607214348 + ... + 753607214375.

It is an arithmetic number, because the mean of its divisors is an integer number (4521643286172).

Almost surely, 2^{21101002002122} is an apocalyptic number.

21101002002122 is a deficient number, since it is larger than the sum of its proper divisors (15072144287254).

21101002002122 is a wasteful number, since it uses less digits than its factorization.

21101002002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507214428732.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21101002002122 its reverse (22120020010112), we get a palindrome (43221022012234).

The spelling of 21101002002122 in words is "twenty-one trillion, one hundred one billion, two million, two thousand, one hundred twenty-two".