21103143020322 has 32 divisors (see below), whose sum is σ = 46325694908160. Its totient is φ = 6355659355920.

The previous prime is 21103143020243. The next prime is 21103143020327. The reversal of 21103143020322 is 22302034130112.

It is a junction number, because it is equal to n+sod(n) for n = 21103143020292 and 21103143020301.

It is not an unprimeable number, because it can be changed into a prime (21103143020327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 980800872 + ... + 980822387.

It is an arithmetic number, because the mean of its divisors is an integer number (1447677965880).

Almost surely, 2^{21103143020322} is an apocalyptic number.

21103143020322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21103143020322 is an abundant number, since it is smaller than the sum of its proper divisors (25222551887838).

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

21103143020322 is a wasteful number, since it uses less digits than its factorization.

21103143020322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961623438.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21103143020322 its reverse (22302034130112), we get a palindrome (43405177150434).

The spelling of 21103143020322 in words is "twenty-one trillion, one hundred three billion, one hundred forty-three million, twenty thousand, three hundred twenty-two".