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2227223032021 = 13224415398949
BaseRepresentation
bin100000011010010000110…
…101100111000011010101
321212220212000001211220201
4200122100311213003111
5242442323044011041
64423101103100501
7316624443260251
oct40322065470325
97786760054821
102227223032021
11789618379959
122bb7985a1731
13132045823900
1479b2626d261
153ce06390631
hex20690d670d5

2227223032021 has 12 divisors (see below), whose sum is σ = 2412715169700. Its totient is φ = 2055055566720.

The previous prime is 2227223032019. The next prime is 2227223032063. The reversal of 2227223032021 is 1202303227222.

It can be written as a sum of positive squares in 6 ways, for example, as 1388874035025 + 838348996996 = 1178505^2 + 915614^2 .

It is not a de Polignac number, because 2227223032021 - 21 = 2227223032019 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 (2227223032421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2286946 + ... + 3112003.

It is an arithmetic number, because the mean of its divisors is an integer number (201059597475).

Almost surely, 22227223032021 is an apocalyptic number.

It is an amenable number.

2227223032021 is a deficient number, since it is larger than the sum of its proper divisors (185492137679).

2227223032021 is a wasteful number, since it uses less digits than its factorization.

2227223032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401416 (or 5401403 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 2227223032021 its reverse (1202303227222), we get a palindrome (3429526259243).

The spelling of 2227223032021 in words is "two trillion, two hundred twenty-seven billion, two hundred twenty-three million, thirty-two thousand, twenty-one".

Divisors: 1 13 169 2441 31733 412529 5398949 70186337 912422381 13178834509 171324848617 2227223032021