21000102022222 has 8 divisors (see below), whose sum is σ = 31500177980256. Its totient is φ = 10500042695472.

The previous prime is 21000102022169. The next prime is 21000102022241. The reversal of 21000102022222 is 22222020100012.

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 = 21000102022196 and 21000102022205.

It is a congruent number.

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, 276438 + ... + 6486649.

It is an arithmetic number, because the mean of its divisors is an integer number (3937522247532).

Almost surely, 2^{21000102022222} is an apocalyptic number.

21000102022222 is a deficient number, since it is larger than the sum of its proper divisors (10500075958034).

21000102022222 is a wasteful number, since it uses less digits than its factorization.

21000102022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8315642.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21000102022222 its reverse (22222020100012), we get a palindrome (43222122122234).

The spelling of 21000102022222 in words is "twenty-one trillion, one hundred two million, twenty-two thousand, two hundred twenty-two".