21000210001122 has 32 divisors (see below), whose sum is σ = 46502500310784. Its totient is φ = 6268719402000.

The previous prime is 21000210001049. The next prime is 21000210001163. The reversal of 21000210001122 is 22110001200012.

It is a junction number, because it is equal to n+sod(n) for n = 21000210001098 and 21000210001107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2374510504 + ... + 2374519347.

It is an arithmetic number, because the mean of its divisors is an integer number (1453203134712).

Almost surely, 2^{21000210001122} is an apocalyptic number.

21000210001122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21000210001122 is an abundant number, since it is smaller than the sum of its proper divisors (25502290309662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000210001122 is a wasteful number, since it uses less digits than its factorization.

21000210001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749029934.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21000210001122 its reverse (22110001200012), we get a palindrome (43110211201134).

The spelling of 21000210001122 in words is "twenty-one trillion, two hundred ten million, one thousand, one hundred twenty-two".