21000023102322 has 48 divisors (see below), whose sum is σ = 50234447416608. Its totient is φ = 6286972957440.

The previous prime is 21000023102297. The next prime is 21000023102419. The reversal of 21000023102322 is 22320132000012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21000023102295 and 21000023102304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 638903583 + ... + 638936450.

It is an arithmetic number, because the mean of its divisors is an integer number (1046550987846).

Almost surely, 2^{21000023102322} is an apocalyptic number.

21000023102322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21000023102322 is an abundant number, since it is smaller than the sum of its proper divisors (29234424314286).

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

21000023102322 is a wasteful number, since it uses less digits than its factorization.

21000023102322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277840135 (or 1277840132 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21000023102322 its reverse (22320132000012), we get a palindrome (43320155102334).

The spelling of 21000023102322 in words is "twenty-one trillion, twenty-three million, one hundred two thousand, three hundred twenty-two".