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22012212200021 = 31710071361291
BaseRepresentation
bin1010000000101000111100…
…00101101100001001010101
32212221100100220201101200022
411000110132011230021111
510341122002310400041
6114452134244554525
74431221065352441
oct500243605541125
985840326641608
1022012212200021
117017365a2550a
1225761453b2a45
13c38986948c64
1456157a9a5821
152828c504d24b
hex14051e16c255

22012212200021 has 4 divisors (see below), whose sum is σ = 22722283561344. Its totient is φ = 21302140838700.

The previous prime is 22012212199969. The next prime is 22012212200117. The reversal of 22012212200021 is 12000221221022.

Adding to 22012212200021 its reverse (12000221221022), we get a palindrome (34012433421043).

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22012212200021 - 210 = 22012212198997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012212200221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355035680615 + ... + 355035680676.

It is an arithmetic number, because the mean of its divisors is an integer number (5680570890336).

Almost surely, 222012212200021 is an apocalyptic number.

It is an amenable number.

22012212200021 is a deficient number, since it is larger than the sum of its proper divisors (710071361323).

22012212200021 is an equidigital number, since it uses as much as digits as its factorization.

22012212200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710071361322.

The product of its (nonzero) digits is 128, while the sum is 17.

The spelling of 22012212200021 in words is "twenty-two trillion, twelve billion, two hundred twelve million, two hundred thousand, twenty-one".

Divisors: 1 31 710071361291 22012212200021