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221021322002122 = 2254943354515889
BaseRepresentation
bin110010010000010010001001…
…011000101011111011001010
31001222120102122221121220221111
4302100102021120223323022
5212432203131413031442
62102023443230400534
764361156254201105
oct6220221130537312
91058512587556844
10221021322002122
1164473686290034
12209574b566014a
1396432b5085845
143c816bbdbb73c
151a844124e1b17
hexc9048962beca

221021322002122 has 8 divisors (see below), whose sum is σ = 331662046558500. Its totient is φ = 110467306482624.

The previous prime is 221021322002119. The next prime is 221021322002141. The reversal of 221021322002122 is 221200223120122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 220595538346681 + 425783655441 = 14852459^2 + 652521^2 .

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 = 221021322002093 and 221021322002102.

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, 21677252847 + ... + 21677263042.

Almost surely, 2221021322002122 is an apocalyptic number.

221021322002122 is a deficient number, since it is larger than the sum of its proper divisors (110640724556378).

221021322002122 is a wasteful number, since it uses less digits than its factorization.

221021322002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43354518440.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 221021322002122 its reverse (221200223120122), we get a palindrome (442221545122244).

The spelling of 221021322002122 in words is "two hundred twenty-one trillion, twenty-one billion, three hundred twenty-two million, two thousand, one hundred twenty-two".

Divisors: 1 2 2549 5098 43354515889 86709031778 110510661001061 221021322002122